Optical system development and performance testing of the NEAR laser rangefinder

Details Optical system development and performance testing of the NEAR laser rangefinder Optical system development and performance testing of the NEAR laser rangefinder

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2811..169b&link_type=abstract

Proc. SPIE Vol. 2811, p. 169-184, Photonics for Space Environments IV, Edward W. Taylor; Ed.

Computer Science

Performance

Scientific paper

The near earth asteroid rendezvous (NEAR) laser rangefinder (NLR) is a bistatic system using a diode-pumped Nd:YAG laser and a Dall-Kirkhamm telescope for a receiver. The NLR is one of a suite of five scientific data gathering instruments on the NEAR spacecraft. The NEAR mission is the first of NASA's Discovery Series of spacecraft. The NLR transmitter emits a 15.6 mJ, 15 ns pulse at 1064 nm. The receiver is capable of reliably detecting return signals from the asteroid as low as 1 fJ per pulse, which corresponds to an average power of 50 nW (20 ns pulse). The development and alignment approach of the bistatic system are discussed. The performance test results of the receiver, transmitter, and integrated rangefinder system are presented. Particular attention is given to the system alignment tests and an open air range verification test.

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