profiles obtained by differential absorption lidar (DIAL) analysis. ... Differential absorption lidars (DIAL) have been and continue to be widely used for the ...
NASA Website
Sep 9, 2011 ... DIAL Ops. The NASA Langley airborne Differential Absorption Lidar (DIAL) uses ultraviolet (UV) DIAL wavelengths of 288 and 300 nm for the ...
A ground-based differential absorption lidar (DIAL) system is described which has been developed for
NASA Technical Reports Server (NTRS)
Measurement Description: The UV Differential Absorption Lidar (DIAL) system is used to measure aerosol, cloud, and ozone profiles above the aircraft [Browell ...
Airborne UV Differential Absorption Lidar (DIAL): Measuring Ozone and Aerosols in the Atmosphere. Figure 1: The Electromagnetic Spectrum The ozone hole ...
Mar 29, 2011 ... Tom McGee, Don Silbert. -Combines Rayleigh Lidar, Differential Absorption Lidar (DIAL), and Raman DIAL -Zenith viewing ...
Development of advanced differential absorption lidar (DIAL) receivers is very important to increase
Mobile differential absorption lidar (DIAL) systems have been used for the last two decades. The lidar group in Lund has performed many DIAL measurements with a mobile lidar system which was first described in 1987. This report describes how that system w...
National Technical Information Service (NTIS)
Computer hardware and software of the NASA multipurpose differential absorption lidar (DIAL) sysatem
The Lidar Atmospheric Sensing Experiment (LASE) Instrument is the first fully-engineered, autonomous Differential Absorption Lidar (DIAL) System for the measurement of water vapor in the troposphere (aerosol and cloud measurements are included). LASE uses...
Differential Absorption Lidar (DIAL) Investigators: Edward Browell (PI), Johnathan Hair (Co-PI), Syed Ismail
E-print Network
Airborne Differential Absorption Lidar (DIAL) Field Experiment Examples: Example Aerosol, Ozone, and Water Vapor Images ...
Aug 4, 2011 ... In the DIAL technique, the gas concentration profile is determined by analyzing the lidar backscatter signals for laser wavelengths tuned ...
The design and preliminary tests of an automated differential absorption lidar (DIAL) that profiles water vapor in the lower troposphere are presented. The instrument, named CODI (for compact DIAL), has been developed to be eye safe, low cost, weatherproof, and portable. The lidar design and ...
PubMed
The DIAL technique is commonly used for measuring ozone in the troposphere. The report presents a method for calculating the systematic error in such measurements due to aerosol differential absorption and backscatter. (Copyright (c) Crown copyright 1987....
Remote detection of chemicals using LIDAR (Light Detection and Ranging) utilizing DIAL (Differential Absorption LIDAR) is now a standard detection technique for both military and civilian activities. We have developed a novel nonlinear optical phase conju...
A case study is presented of 6.5 h of simultaneous colocated stratospheric Differential Absorption Lidar (DIAL) measurements of ozone concentration and Rayleigh-Mie Doppler (RD) lidar measurements of horizontal wind velocity from the Observatoire de Haute...
The capabilities of the DIAL data acquisition system (DAS) for the remote measurement of atmospheric
These activities have included the development and application of airborne Differential Absorption LiDAR (DIAL) systems for studies of ozone, water vapor, ...
Passive Sonar; Active Sonar; Differential Absorption Lidar (DIAL); Fourier Transform Infrared (FTIR) Spectroscopy; Spontaneous Raman Spectroscopy ...
We describe a first generation mid-infrared transmitter with pulse to pulse frequency agility and both wide and narrow band capability. This transmitter was used to make multicomponent Differential Absorption LIDAR (DIAL) measurements in the field.
DOE Information Bridge
This report is the third annual progress report on research into methods for remote measurement of air pollutants. The major thrust was toward establishing differential-absorption -lidar (DIAL) capabilities in the infrared. The first infrared DIAL system ...
Two contrasting boundary layers in an enclosed valley are observed with a water vapor differential absorption lidar (DIAL) and in situ instruments on board the National Center for Atmospheric Research (NCAR) Electra and University of Wyoming King Air rese...
Summarized here are the results of airborne water vapor measurements in the lower middle and upper troposphere using the Differential Absorption Lidar (DIAL) technique in the near infrared. The measurements were performed in July 1990 in Southern Bavaria ...
Recent interest in monitoring atmospheric CO2 focuses attention on infrared remote sensing using the 2-micron lidar/differential absorption lidar (DIAL) technique. Quantum detectors are critical components in this technique, and many research efforts conc...
Improvements to and complementary systems for a differential absorption lidar system for field work are discussed. A dual-wavelength laser and a dual-wavelength detection system, which make DIAL with simultaneous lidar measurements at two wavelengths possible, are described. A multiwavelength measurement routine, ...
Energy Citations Database
Development of advanced differential absorption lidar (DIAL) receivers is very important to increase the accuracy of atmospheric water vapor measurements. A major component of such receivers is the optical detector. In the near-infrared wavelength range a...
The development of eye-safe, solid-state Lidar systems is discussed, with an emphasis on Coherent Doppler Lidar for Atmospheric Wind Measurements. The following subject areas are covered: tunable Ho DIAL (Differential Absorption Lidar)/lidar atmospheric m...
A measurement of ambient nitrogen dioxide concentration by an air quality monitoring station, and a visible lidar system using a differential absorption lidar (DIAL) technique are performed. The agreement between measured values is within experimental error of the lidar results for average wind ...
The chemical absorption spectra of the light hydrocarbons in the infrared region from 3 to 4 micrometers allows the use of DIAL techniques for monitoring these chemicals. The light hydrocarbons; methane, ethane, propane, and butane can be used as petroleum deposit indicators for petroleum exploration, or as gases associated with pipeline leaks. Both of ...
NASA Astrophysics Data System (ADS)
A pulsed, 2-?m coherent Differential Absorption Lidar (DIAL) / Integrated Path Differential Absorption (IPDA) transceiver, developed under the Laser Risk Reduction Program (LRRP) at NASA, is integrated into a fully functional lidar instrument. This instrument measures atmospheric CO2 profiles ...
The ability of a Differential Absorption Lidar (DIAL) system to measure vertical profiles of H2O in the lower atmosphere was demonstrated both in ground-based and airborne experiments. In these experiments, tunable lasers were used that required real-time experimenter control to locate and lock onto the atmospheric H2O ...
The Differential Absorption Lidar (DIAL) method is reviewed and performance evaluations are presented for a NO2 detection system. Discussions on the preferred wavelengths for candidate gases, and a review of a new laser radar DIAL performance equation are presented. Applications in the areas of drug interdiction, ...
By combining the capability of a differential absorption lidar (DIAL) and the excellent characteristics of a micro pulse lidar (MPL) we have designed and tested a micro pulse DIAL system, which could be operated from the ground or airborne platform, to monitor the atmospheric water vapor mixing ...
The WAter vapour Lidar Experiment in Space (WALES) mission aims at providing water vapour profiles with high accuracy and vertical resolution through the troposphere and the lower stratosphere on a global scale using an instrument based on Differential Absorption Lidar (DIAL) observation technique, and mounted on ...
We present a new differential absorption lidar (DIAL) method for atmospheric trace SO2 using multiwavelength curve fitting. With this method we use five wavelengths around a SO2 absorption peak and obtain SO2 and O3 concentrations by fitting their absorption cross sections to measured ...
A CW tunable 10.6 microm CO(2) laser differential absorption lidar (DIAL) system has been developed, for the first time to our knowledge, for the remote sensing of triacetone triperoxide (TATP) gas vapors, which have strong absorption lines at several wavelengths, including 3.3, 8.3, and 10.6 microm. The ...
Measurements of lower stratospheric ozone in the Tropics using electrochemical concentrations cell (ECC) sondes and the airborne UV Differential Absorption Lidar (DIAL) system after the eruption of Mt. Pinatubo are compared with the Stratospheric Aerosol ...
An analysis of two sets of atmospheric optical and supporting meteorological data has been performed. The first data set was taken by an airborne differential absorption lidar (DIAL) system. From this data set, vertical water vapor density profiles were e...
The Differential Absorption Lidar (DIAL) technique is a powerful method for determining meteorological parameters, but it requires high quality of the laser source: high energy, very narrow bandwidth, high wavelength stability, and spectral purity. Althou...
A brief survey is given of remote measurements of air pollutants by the differential absorption technique. The use of differential absorption lidar (DIAL) systems in pollution studies is discussed, and suitable lasers are identified. Some results are presented for DIAL measurements with a ...
A new technique is presented for the retrieval of ozone concentration profiles from backscattered signals obtained by a multi-wavelength differential-absorption lidar (DIAL). The technique makes it possible to reduce erroneous local fluctuations induced in the ozone-concentration...
EPA Science Inventory
A three-wavelength differential-absorption lidar (DIAL) technique for the UV spectral region is presented that reduces the influence of aerosol differential scattering on measured O3-concentration profiles. The principal advantage of this approach is that, to a good first approxi...
The horizontal distribution of ozone is measured by the DIAL-technique in an atmospheric layer near the surface. The laser system, which is first of all conceived as a laboratory experiment, provides spatially resolved measurements of the ozone-concentrat...
The design of a double pulsed, injection seeded, 2-micrometer compact coherent Differential absorption Lidar (DIAL) transmitter for CO2 sensing is presented. This system is hardened for ground and airborne applications. The design architecture includes th...
The ambient atmosphere between the laser transmitter and the target can affect CO{sub 2} differential absorption lidar (DIAL) measurement sensitivity through a number of different processes. In this work, we will address two of the sources of atmospheric interference with CO{sub 2} DIAL measurements: effects due to ...
This paper presents the results of stratospheric ozone measurements made from Aug 1991 to Dec 1992, by means of differential absorption lidar (DIAL) and an aerosol lidar, above L'Aquila, Italy. The aerosol lidar was necessary to allow separation of the backscatter signal from the ...
An airborne differential absorption lidar (DIAL) system has been developed for the remote measurement of gas and aerosol profiles in the troposphere and lower stratosphere. The multipurpose DIAL system can operate from 280 to 1064 nm for measurements of ozone, sulfur dioxide, nitrogen dioxide, water vapor, ...
Remote detection of chemicals using LIDAR (Light Detection and Ranging) utilizing DIAL (Differential Absorption LIDAR) is now a standard detection technique for both military and civilian activities. We have developed a novel nonlinear optical phase conjugation system that can reduce the effects of speckle noise ...
Aug 6, 2010 ... PHASE 1 CONTRACT NUMBER: NNX10CE92P ... The single frequency 2.05-micron fiber laser can be used to build coherent laser radars and ... Coherent Doppler Lidars and Differential Absorption Lidars (DIALs), working with ...
A continuously-tunable, narrow-linewidth, flashlamp-pumped, Q-switched Cr:LiSAF laser has been developed (energy: 30 mJ, pulsewidth: 40 ns, linewidth: <2 GHz) and was used successfully for the DIAL (differential absorption lidar) measurements of atmospheric water vapor.
As part of its program to develop coherent heterodyne detection lidar technology for space, airborne, and ground based applications, the Optical Environment Division of the USAF's Phillips Laboratory developed a compact coherent CO2 TEA lidar system. Although originally conceived as a high altitude balloon borne system, the lidar is ...
The measurement sensitivity of CO{sub 2} differential absorption lidar (DIAL) can be affected by a number of different processes. The authors have previously developed a Huygens-Fresnel wave optics propagation code to simulate the effects of two of these processes: effects caused by beam propagation through atmospheric optical ...
Los Alamos National Laboratory is currently developing an airborne CO{sub 2} Differential Absorption Lidar (DIAL) system based on second generation technology demonstrated last summer at NTS. The CALIOPE Airborne CO{sub 2} DIAL (CACDI) system requirements have been compiled based on the mission objectives and ...
... characterization of atmospheric and terrain backscatter for input to performance studies for future airborne DIAL and Doppler lidar systems; Real ...
DTIC Science & Technology
CO{sub 2} differential absorption lidar (DIAL) performance can be adversely affected by the ambient atmosphere between the laser transmitter and the target through a number of different processes. This work addresses two sources of atmospheric interference with multispectral CO{sub 2} DIAL measurements: effects due ...
Air pollution problem in the Czech Republic is very complex due to large number of factors as turbulent dispersion and chemical reactions concurring in the status of the PBL. For this 3D distribution of pollutants is a key information that cannot be given by conventional monitoring stations. Combined use of DIAL lidar and sodar can give access to such ...
A continuously-tunable, narrow-linewidth, flashlamp-pumped, Q-switched Cr:LiSAF laser has been developed (energy: 30 mJ, pulsewidth: 40 ns, linewidth:<2 GHz) and was used successfully for the DIAL(differential absorption lidar) measurements of atmospheric water vapor and LIF lidar for the remote detection of ...
The development and demonstration of lidar techniques for the remote measurement of atmospheric constituents and transport processes in the lower troposphere was carried out. Particular emphasis was given to techniques for monitoring SO/sup 2/ and particulates, the principal pollutants in power plant and industrial plumes. Data from a plume dispersion study conducted in ...
Many studies recently have investigated the active remote sensing of atmospheric greenhouse gases, such as CO2 and CH4, by means of differential absorption lidar systems. According to them, the accuracy of the laser wavelengths used is one of the most important issues of this technique in terms of conformance to the high measurement sensitivity ...
We discuss the development of a frequency-agile receiver for CO(2) laser-based differential absorption lidar (DIAL) systems. The receiver is based on the insertion of a low-order tunable etalon into the detector field of view. The incorporation of the etalon into the receiver reduces system noise by decreasing the instantaneous ...
During the past years, there has been a marked increase in interest in the applications of vibronic solid state lasers to meteorology and atmospheric physics. Two airborne lidar programs are now under development in France. The differential absorption lidar (DIAL) method with vibronic solid state lasers is very ...
an astigmatic Herriot cell," in Tunable Diode Laser Spectroscopy, Lidar, and DIAL Techniques for Environmental the lasing beam through multipass absorption cells, which are often employed in field sensors for trace gas into multipass absorp- tion cells. In astigmatic Herriott cells, for example, which are becoming more popular
The development of a differential absorption lidar (DIAL) system in the mid-IR region for the detection and monitoring of light hydrocarbons is presented. Two lithium niobate optical parametric oscillators provided the signal and reference wavelengths. With the aid of a retroreflector, the system detected 0.63 ppm of propane and 0.05 ...
The benefits of retrieving ozone concentration profiles by a use of a single Raman signal rather than the Raman differential absorption lidar (DIAL) technique are investigated by numerical simulations applied either to KrF- (248 nm) or to quadrupled Nd:YAG- (266 nm) based Raman lidars, which are used for both ...
Water vapor is one of the most significant constituents of the atmosphere because of its role in cloud formation, precipitation, and interactions with electromagnetic radiation, especially its absorption of longwave infrared radiation. Some details of the role of water vapor and related feedback mechanisms in the Earth system need to be characterized better if local weather, ...
The measurement sensitivity of CO{sub 2} differential absorption LIDAR (DIAL) can be affected by a number of different processes. The authors address the interaction of two of these processes: effects due to beam propagation through atmospheric turbulence and effects due to reflective speckle. Atmospheric turbulence affects the beam ...
We report the application of an infrared (IR) differential absorption Lidar (DIAL) system (also capable of ultra violet measurements) built at the National Physical Laboratory (NPL), UK, to field measurements of total site emissions (controlled and fugitive) from petrochemical and landfill installations. The validation of the ...
A simple and reliable preionizing system obtained by combining the mesh cathode method and SiC ceramics has been studied. It was found that a SiC preionizer with a resistivity of 10--20 ..cap omega.. cm was the most suitable for a uniform glow discharge at atmospheric pressure. This preionizing technique has been used for TEA CO/sub 2/ lasers of an airborne ozone differential ...
Pacific Northwest National Laboratory's Infrared Sensors team is focused on developing methods for standoff detection of nuclear proliferation. In FY05, PNNL continued the development of the FM DIAL (frequency-modulated differential absorption LIDAR) experiment. Additional improvements to the FM DIAL ...
The lidar group in Lund has performed many DIAL measurements with a mobile lidar system that was first described in 1987. The lidar system is based on a Nd:YAG-pumped dye laser. During the last few years the lidar group has focused on fluorescence imaging...
In the tropics, deep convection is the major source of uncertainty in water vapor transport to the upper troposphere and into the stratosphere. Although accurate measurements in this region would be of first order importance to better understand the processes that govern stratospheric water vapor concentrations and trends in the context of a changing climate, they are sparse because of ...
A few of the available options for Raman and differential absorption lidar measurements of the vertical profile of the water vapour mixing ratio in daytime are compared through numerical simulation. In ENEA's project, such an instrument is to be deployed at the island of Lampedusa for measurements in the Planetary Boundary Layer. The numerical model shows ...
Differential absorption lidar (DIAL) is a well-established technology for estimating the concentration and its path integral CL of vapor materials using two closely spaced wavelengths. The recent development of frequency-agile lasers (FAL's) with as many as 60 wavelengths that can be rapidly scanned motivates the need for detection and ...
The present conference on airborne and spaceborne remote sensing laser applications discusses topics in atmospheric and geophysical sciences-related sensors, lidar and DIAL component and subsystem technologies, and coherent laser experiments and semiconductor laser technologies. Attention is given to airborne lidar measurement of ...
In the lidar-dial method, the amount of the water vapor present in the smoke of the vegetable fuel is detected to reduce the number of false alarms. We report the measurements of the smoke backscattering coefficients for the CO2 laser lines 10R20 and 10R18 as determined in an absorption cell for two different vegetable fuels (eucalyptus and conifer). These ...
A differential absorption lidar (DIAL) using a Q-switched CO(2) laser and a heterodyne receiver has been developed. The DIAL system is highly automated with computer-controlled laser-line selection and signal processing. The transmitter operates at a pulse-repetition frequency of 20 kHz and has an average output ...
An error analysis of differential absorption lidar (DIAL) measurements of stratospheric ozone from a Space Shuttle is discussed. A transmitter system consisting of a KrF excimer laser pumping gas cells of H2 or D2 producing output wavelengths in the near ...
A Differential Absorption Lidar (DIAL) system that at a distance of 15 meters can remotely sense natura gas (methane) leaks was developed. The system uses two helium-neon lasers (each emitting a different wavelength), a receiver, and an indium antimonide (InSb) photodetector cooled to 77 K. It is demonstrated the system can defect ...
During the last several years, Pacific Northwest National Lab has developed a remote sensing system designed to detect trace chemicals present in the atmosphere. Using Frequency Modulated Differential Absorption LIDAR (FM DIAL) techniques chemical signatures have been observed over pathlengths ranging from several hundred meters to ...
A differential absorption lidar (DIAL) was installed on the Amundsen Icebreaker for measuring vertical profiles of ozone above the frozen Arctic Ocean. The lidar is based on stimulated Raman Scattering (SRS) of 266 nm laser energy in CO2 to generate three closely spacedwavelengths (287 nm, 289 nm, 299 nm) in the ...
Global ozone measurements are needed across the troposphere with high vertical resolution to enable comprehensive studies of continental and intercontinental atmospheric chemistry and dynamics, which are affected by diverse natural and human-induced processes. The development of a unattended aerial vehicle (UAV) based Global Ozone Lidar Demonstrator (GOLD) is an important ...
This paper presents an evaluation of the random and systematic error sources associated with differential absorption lidar (DIAL) measurements of tropospheric water vapor (H(2)O) profiles from airborne and spaceborne platforms. The results of this analysis are used in the development and performance evaluation of the ...
Comparative study is performed for a mid-infrared differential absorption lidar system with different wavelengths around 1.6 �m and 2 �m for remote sensing of green-house effect gas CO2. Simulation based on lidar equations is performed for estimating detectable range and detectable concentration per unit volume. Different ...
ADVANCED ATMOSPHERIC WATER VAPOR DIAL DETECTION SYSTEM Measurement of atmospheric water vapor is very important for understanding the Earth's climate and water cycle. The remote sensing Differential Absorption Lidar (DIAL) technique is a powerful method to perform such measurement from aircraft and space. This ...
The ratio of temporally adjacent lidar pulse returns is commonly used in differential absorption lidar (DIAL) to reduce correlated noise. These pulses typically are generated at different wavelengths with the assumption that the dominant noise is common to both. This is not the case when the mean number of laser ...
Continuous, high quality profiles of water vapor, free of systematic bias, and of moderate temporal and spatial resolution are fundamental to the success of the ARM CART program. In addition, these should be acquired over long periods at low operational and maintenance cost. The development and verification of realistic climate model parameterizations for clouds and net radiation balance, and the ...
A unique end-to-end LIDAR sensor model has been developed supporting the concept development stage of the CALIOPE UV DIAL and UV laser-induced-fluorescence (LIF) efforts. The model focuses on preserving the temporal and spectral nature of signals as they pass through the atmosphere, are collected by the optics, detected by the sensor, and processed by the ...
The lidar remote sensing techniques are powerful for monitoring of gaseous toxic species in atmosphere over wide areas. The paper presented describes design, development and field testing of Mobile Lidar System (MLS) based on utilization of Differential Absorption Lidar (DIAL) technique. The ...
During a series of dedicated measurement campaigns for the validation of level-2 data products of both SCIAMACHY and MIPAS on ENVISAT two different payloads were employed on board of the DLR research aircraft Falcon 20. In the first set of campaigns (in September 2002 and February/March 2003) the stratospheric ozone lidar OLEX measured the 2-dimensional ozone distribution as ...
Title of Paper: NASA LaRC DIAL/Lidar Laser Technology Development Program. Principal Author: Mr. James Barnes. Abstract: Abstract: Future NASA missions ...
The Air Force Research Laboratory has developed and tested an airborne CO2 differential absorption lidar system for the remote detection of chemicals. The Laser Airborne Remote Sensing DIAL system uses topographic backscatter to provide a long-range measurement of the column-content absorption of chemical plumes in ...
A ground-based differential Absorption Lidar (DIAL) system has been implemented at CEILAP laboratory, located in the Buenos Aires industrial suburbs, The goal was to perform measurements of the stratospheric ozone layer. Since early 199 systematic measurements of zone concentration profiles from approximately 18 to 35 km altitude are ...
A differential absorption lidar (DIAL) was installed on the Amundsen Icebreaker for measuring vertical profiles of ozone above the frozen Arctic Ocean. The lidar is based on stimulated Raman Scattering (SRS) of 266 nm laser energy in CO2 to generate three closely spaced wavelengths (287 nm, 289 nm, 299 nm) in the ...
SRI International designed and constructed a DIfferential Absorption Lidar (DIAL) to provide EPRI with a mobile field system for remote measurements of SO/sub 2/, NO/sub 3/, and O/sub 3/. After field testing the lidar was prepared for the sytem calibration testing where lidar measurements were ...
We present an intercomparison of three years of measurements of integrated water vapor (IWV) performed by the mid-infrared solar FTIR (Fourier Transform Infra-Red) instrument on the summit of Mt. Zugspitze (2964 m a.s.l.) and by the nearby near-infrared differential absorption lidar (DIAL) at the Schneefernerhaus research station (2675 ...
An electro-optically fast-tuning ruby laser, which consists of a calcite-KDP crystal as the fast-tuning component, and a Fabry-Perot resonant frequency selector as the fine wavelength controller, has been developed for a differential absorption lidar (DIAL), system for water vapor sounding in the atmosphere. The laser has stepwise ...
The measurement sensitivity of CO{sub 2} differential absorption lidar (DIAL) can be affected by a number of different processes. We have previously developed a Huygens-Fresnel wave optics propagation code to simulate the effects of two of these process: effects caused by beam propagation through atmospheric optical turbulence and ...
A compact airborne down-looking lidar system was developed at the Environmental Protection Agency in
The performance of a spaceborne temperature lidar based on the pure rotational Raman (RR) technique in the UV has been simulated. Results show that such a system deployed onboard a low-Earth-orbit satellite would provide global-scale clear-sky temperature measurements in the troposphere and lower stratosphere with precisions that satisfy World Meteorological Organization (WMO) ...
Three lidar systems are currently in development at University of Hohenheim. A water vapor lidar based on the differential absorption lidar (DIAL) technology working near 815 or 935 nm, a temperature and aerosol lidar employing the rotational Raman technique at 355 nm, and ...
We describe a new method for gas flux measurements that is a combination of differential absorption lidar (DIAL) and wind videography. The wind speed was measured by an imaging method that calculates the horizontal displacement of the plume with cross-correlation techniques. High spatial and temporal resolution is achieved with ...
Current results from laboratory testing of an eye-safe, ground-based ozone lidar instrument specialized for ozone differential absorption lidar measurements in the troposphere are presented. This compact prototype instrument is intended to be a prototype for operation at remote field sites and to serve as the basic unit for future ...
We describe a new method for gas flux measurements using a combination of differential absorption lidar (DIAL) and wind videography. The wind speed was measured by an imaging method, which calculates the horizontal displacement of the plume with cross correlation techniques. High spatial and temporal resolution is achieved with ...
The lidar systems contribute with privileged information to study environmental pollution due to its capacity to discriminate different atmospheric parameters in time and space. In this work, three of those system were developed at CEILAP laboratory in Argentina (34� 33' S, 58� 30' W): 1) a Multiwavelength lidar to characterized the atmospheric ...
Standoff sensors for rapid remote detection of chemical emissions from either clandestine chemical production sites, chemical and biological warfare agents, concealed internal combustion engine emissions or rocket propellants from missiles are required for several DoD applications. The differential absorption lidar (DIAL) operating in ...
High-accurate vertical carbon dioxide (CO2) profiles are highly desirable in the inverse method to improve quantification and understanding of the global sink and source of CO2, and also global climate change. We have developed a ground based 1.6?m differential absorption lidar (DIAL) to achieve high accurate measurements of vertical ...
Wavelength accuracy and stability are key requirements for differential absorption lidar (DIAL). We present a control and timing design for the dual-stabilized cw master lasers in a pulsed master-oscillator power-amplifier configuration, which forms a robust low-cost water-vapor DIAL transmitter system. This design ...
Tropospheric profiles of water vapour and wind were measured with differential absorption lidar (DIAL) and heterodyne detection wind lidar collocated onboard the DLR Falcon research aircraft during the Convective and Orographicallyinduced Precipitation Study (COPS; www.cops2007.de) over Southwest Germany in summer ...
