7 December 1998 Atmospheric observation by airborne lidar using a Si-APD single-photon counting module
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Abstract
A solid state airborne lidar for profiling cloud and aerosol scattering has been demonstrated. The transmitter of the lidar is a laser diode pumped Q-switched Nd:YLF laser. The wavelength of the laser is 1,053 nm, output energy from a transmitter optics is 16.5 mJ and repetition rate is 50pps. Eye safety is obtained through beam expansion, whose divergence is 2.6mrad. The diameter of the telescope made of beryllium is 200mm, the field of view is 0.3mrad. The receiver employs a photon counting solid state Geiger mode avalanche photodiode. The vertical resolution is 75m. The received signals were integrated 300 times to the horizontal direction to improve the signal to noise ratio. The measurements for airmolecule, aerosol and cloud were performed using the lidar in November, 1997. The airplane made a round trip from Nagoya airport to Kashima nada via Tsukuba in Japan. The altitude of the airplane was 6,150 m. The measurements indicate that the lidar is capable of detecting and profiling cloud and aerosol scattering through the atmosphere.
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Kenji Tatsumi, Tadashi Imai, Yasuaki Kawamura, "Atmospheric observation by airborne lidar using a Si-APD single-photon counting module", Proc. SPIE 3494, Atmospheric Propagation, Adaptive Systems, and Lidar Techniques for Remote Sensing II, (7 December 1998); doi: 10.1117/12.332432; https://doi.org/10.1117/12.332432
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KEYWORDS
LIDAR

Clouds

Aerosols

Semiconductor lasers

Scattering

Neodymium lasers

Receivers

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