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A GNC Perspective of the Launch and Commissioning of NASA's SMAP (Soil Moisture Active Passive) Spacecraft
External Online Source: hdl:2014/45911
Author and Affiliation:
Brown, Todd S.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Abstract: The NASA Soil Moisture Active Passive (SMAP) spacecraft was designed to use radar and radiometer measurements to produce global soil moisture measurements every 2-3 days. The SMAP spacecraft is a complicated dual-spinning design with a large 6 meter deployable mesh reflector mounted on a platform that spins at 14.6 rpm while the Guidance Navigation and Control algorithms maintain precise nadir pointing for the de-spun portion of the spacecraft. After launching in early 2015, the Guidance Navigation and Control software and hardware aboard the SMAP spacecraft underwent an intensive spacecraft checkout and commissioning period. This paper describes the activities performed by the Guidance Navigation and Control team to confirm the health and phasing of subsystem hardware and the functionality of the guidance and control modes and algorithms. The operations tasks performed, as well as anomalies that were encountered during the commissioning, are explained and results are summarized.
Publication Date: Jan 04, 2016
Document ID:
20170008278
(Acquired Sep 11, 2017)
Subject Category: SPACECRAFT DESIGN, TESTING AND PERFORMANCE; LAUNCH VEHICLES AND LAUNCH OPERATIONS; EARTH RESOURCES AND REMOTE SENSING
Document Type: Conference Paper
Publication Information: (SEE 20170008303)
Meeting Information: Annual AIAA Science and Technology Forum and Exposition (AIAA SciTech) 2016; 4 - 8 Jan. 2017; San Diego, CA; United States
Meeting Sponsor: American Inst. of Aeronautics and Astronautics; Reston, VA, United States
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 27p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: SOIL MOISTURE; RADAR MEASUREMENT; RADIOMETERS; GUIDANCE (MOTION); NAVIGATION; LAUNCHING; COMPUTER PROGRAMS; SYNTHETIC APERTURE RADAR; SPACECRAFT DESIGN; LAUNCH VEHICLES; DUAL SPIN SPACECRAFT; ALGORITHMS; ANTENNAS; LARGE DEPLOYABLE REFLECTOR; ANOMALIES
Availability Source: Other Sources
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