The Lunar Reconnaissance Orbiter Laser Ranging Investigation

Details The Lunar Reconnaissance Orbiter Laser Ranging Investigation The Lunar Reconnaissance Orbiter Laser Ranging Investigation

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufm.u41c0827z&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #U41C-0827

Physics

Optics

6019 Gravitational Fields (1221), 6094 Instruments And Techniques

Scientific paper

The LRO Laser Ranging (LR) system will make one-way range measurements via laser pulse time-of-flight from the Earth to LRO. The LR will determine the position of the spacecraft at a sub-meter level with respect to the Earth and the center of mass of the Moon. The LR system consists of a flight system and ground system. The flight system includes a receiver telescope plus additional optics and packaging of one of the Lunar Orbiter Laser Altimeter's (LOLA) aft optic ports. The receiver telescope captures the Earth-transmitted laser signal and the fiber optic cable routes it to the LOLA aft optics port. The ground system consists of a ground observatory that transmits laser pulses and a data distribution facility. The ground station will record the timing of transmitted pulses, with the departure and arrival times of pulses combined to produce the range from Earth to the LRO spacecraft. The LR will range with better than 10 cm precision, 1sigma, in a 1-second integration period. The LR ranging data will be combined with S-band tracking of LRO and LOLA laser ranges from LRO to the surface of the Moon. The combined data will be used to satisfy the precision orbit determination requirements for LRO and to generate an improved gravity model for the Moon to assist in lunar navigation and targeting.

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