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Photogrammetry and altimetry. Part A: Apollo 16 laser altimeterThe laser altimeter measures precise altitudes of the command and service module above the lunar surface and can function either with the metric (mapping) camera or independently. In the camera mode, the laser altimeter ranges at each exposure time, which varies between 20 and 28 sec (i.e., 30 to 43 km on the lunar surface). In the independent mode, the laser altimeter ranges every 20 sec. These altitude data and the spacecraft attitudes that are derived from simultaneous stellar photography are used to constrain the photogrammetric reduction of the lunar surface photographs when cartographic products are generated. In addition, the altimeter measurements alone provide broad-scale topographic relief around the entire circumference of the moon. These data are useful in investigating the selenodetic figure of the moon and may provide information regarding gravitational anomalies on the lunar far side.
Document ID
19730013063
Document Type
Other
Authors
Wollenhaupt, W. R. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Sjogren, W. L. (JPL)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Publication Information
Publication: Apollo 16 Prelim. Sci. Rept.
Subject Category
INSTRUMENTATION AND PHOTOGRAPHY
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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