Development and First Results of a new Near-IR Airborne Greenhouse Gas Lidar

Fix, Andreas; Amediek, Axel; Büdenbender, Christian; Ehret, Gerhard; Quatrevalet, Mathieu; Wirth, Martin; Löhring, Jens; Kasemann, Raphael; Klein, Jürgen; Hoffmann, D. H. H.; Klein, Volker

doi:10.1364/assl.2015.ath1a.2

Cited by 12 publications

(13 citation statements)

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“…The upconversion detector system is tested using the airborne demonstrator for the French/German MERLIN mission [3] developed at DLR. For the experiments described in the following, the upconversion detection system was set-up side by side to this lidar instrument to allow for a comparison between the direct detection (using InGaAs PIN diodes) and the upconversion approach.…”

Section: Methodsmentioning

confidence: 99%

“…The receiver system in the demonstrator used for comparison uses a 200 mm diameter telescope and a 1 mm InGaAs PIN detector. Further details on the MERLIN demonstrator is found in [3] and for the laser system specifically see [9]. The upconversion based receiver system consists of four main parts: An 8" Cassegrain telescope, beam scaling and guiding optics, the upconversion module, filters and the visible PMT.…”

Section: Methodsmentioning

confidence: 99%

“…A technique that shows potential to provide highly accurate measurements e.g. from ground, aircraft or satellites is the Differential Absorption Lidar (DIAL) technique or its modification, the Integrated Path DIAL (IPDA) [2,3], applied in the near infrared spectral range. The IPDA technique has proven viable for airborne measurements of integrated path concentrations [3], but a pulsed DIAL system is required to get vertical concentration profiles.…”

Section: Introductionmentioning

confidence: 99%

“…from ground, aircraft or satellites is the Differential Absorption Lidar (DIAL) technique or its modification, the Integrated Path DIAL (IPDA) [2,3], applied in the near infrared spectral range. The IPDA technique has proven viable for airborne measurements of integrated path concentrations [3], but a pulsed DIAL system is required to get vertical concentration profiles. This has been demonstrated earlier at 1.6 µm with a near infrared PMT and 5 hours of integration time [4], but much shorter integration times are needed for airborne measurements.…”

Section: Introductionmentioning

confidence: 99%

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Upconversion-based lidar measurements of atmospheric CO_2

Høgstedt¹,

Fix²,

Wirth³

et al. 2016

Opt. Express

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For the first time an upconversion based detection scheme is demonstrated for lidar measurements of atmospheric CO 2 -concentrations, with a hard target at a range of 3 km and atmospheric backscatter from a range of ∼450 m. The pulsed signals at 1572 nm are upconverted to 635 nm, and detected by a photomultiplier tube, to test how the upconversion technology performs in a long range detection system. The upconversion approach is compared to an existing direct detection scheme using a near-IR detector with respect to signal-to-noise ratio and quantum efficiency. It is for the first time analyzed how the field-of-view of a receiver system, for long range detection, depends critically on the parameters for the nonlinear upconversion process, and how to optimize these parameters in future systems.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Upconversion-based lidar measurements of atmospheric CO_2

Høgstedt¹,

Fix²,

Wirth³

et al. 2016

Opt. Express

Self Cite

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“…The on-line and off-line wavelengths are generated by individual lasers locked with a defined offset to their references. By means of fibre optic transmission lines and fast fibre-optic switches, the narrowband radiation is guided to the OPOs to generate spectrally narrow-band, powerful laser pulses by virtue of the injection seeding technique [20]. All development steps for CHARM-F concerning data acquisition, frequency reference and stabilisation concept, and energy calibration strongly benefited from the experience made during the development of other airborne lidars such as WALES and also ongoing technology studies in the framework to support future space borne lidar missions.…”

Section: Charm-f An Airborne Demonstrator For Methane and Carbon mentioning

confidence: 99%

On the benefit of airborne demonstrators for space borne lidar missions

Fix

Amediek

Ehret

et al. 2017

International Conference on Space Optics — ICSO 2016

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The challenges of measuring methane from space with a LIDAR

Riris

Numata

et al. 2019

CEAS Space J

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The global and regional quantification of methane fluxes and identification of its sources and sinks has been highlighted as one of the goals of the NASA 2017 Earth Science Decadal Survey. Detecting methane from space and airborne platforms with an active (laser) remote sensing instrument presents several unique technology and measurement challenges. The instrument must have a single frequency, narrow-linewidth light source, and photon-sensitive detector at the right spectral region to make continuous measurements from orbit, day and night, all seasons and at all latitudes. It must have a high signal to noise ratio and must be relatively immune to biases from aerosol/cloud scattering, spectroscopic and meteorological data uncertainties, and instrument systematic errors. At Goddard Space Flight Center (GSFC), in collaboration with industry, we have developed an airborne instrument to measure methane. Our instrument is a nadir-viewing lidar that uses Integrated Path Differential Absorption (IPDA), to measure methane near 1.65 µm. We sample the absorption line using multiple wavelengths from a narrow linewidth laser source and a sensitive photodetector. This measurement approach provides maximum information content about the CH4 column, and minimizes biases in the XCH4 retrieval. In this paper, we will review our progress to date and discuss the technology challenges, options and tradeoffs to measure methane from space and airborne platforms.

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Development and First Results of a new Near-IR Airborne Greenhouse Gas Lidar

Cited by 12 publications

References 1 publication

Upconversion-based lidar measurements of atmospheric CO_2

Upconversion-based lidar measurements of atmospheric CO_2

On the benefit of airborne demonstrators for space borne lidar missions

The challenges of measuring methane from space with a LIDAR

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