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Proceedings Paper • Open Access

LIDAR echo emulator
Author(s): Pawel Adamiec; Alvaro Machon; Monica Rodriguez Cortina; Alejandro Lopez Moya; Enrique Cordero; Juan Barbero

Paper Abstract

The LIDAR Echo Emulator (LEE) emulates the returned signals from a Lidar system. As the return signal of a Lidar system depends on the target, this implies the capability of shaping the lasers returns. In brief, long echo corresponds to a natural or diffusive object (canopy, clouds) and short echoes to a hard object like roofs, ground, etc. Such signals are necessary to be simulated to study and validate new detectors and detection systems without developing/procuring entire Lidar system. LEE consists of pulse shaping electronics to drive independently the lasers for each echo and internal detection system to monitor the pulses. The short echoes can be in the range from 5 ns to hundreds of ns and the long echoes from 1 μs up to hundreds of μs. The repetition rates of the developed emulator are from 100 Hz to 10 kHz with limitation that the longest pulse does not exceed 10% of the duty cycle. The power difference between both echoes can be set and is as high as 60 dB. The dynamics of the echoes is better than 50 dB within the 8 ns in the rising/falling edge of the pulse (echo). The output power can be tuned by means of variable attenuators giving a range of the incoming echoes from -35 dBm to -100 dBm. The LEE can also emulate multiple returns with aforementioned dynamics.

Paper Details

Date Published: 12 July 2019
PDF: 8 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111801U (12 July 2019); doi: 10.1117/12.2535985
Show Author Affiliations
Pawel Adamiec, Alter Technology (Spain)
Alvaro Machon, Alter Technology (Spain)
Monica Rodriguez Cortina, Alter Technology (Spain)
Alejandro Lopez Moya, Alter Technology (Spain)
Enrique Cordero, Alter Technology (Spain)
Juan Barbero, Alter Technology (Spain)

Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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