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- W1562200640 abstract "This paper describes a proposal for a rapid, low cost, nanosatellite mission to demonstrate the concept of GPS ocean reflectometry and to investigate the feasibility of determining sea state for a future operational space-based storm warning systems. The aims of this mission are to prove the general feasibility of GPS ocean reflectometry, to demonstrate sea state determination and to enable the development of a practical GPS ocean reflectometry payload for future missions. The payloads on the satellite consist of a 24 channel C/A code SGR-10 space GPS receiver and a solid-state data recorder. The GPS receiver has one standard RHCP zenith antenna, and one high gain Left Hand Circular Polarised (LHCP) nadir antenna for receiving the reflected signals. A dual approach is taken to measurement gathering. Initially, bursts of directly sampled IF data are stored and downloaded to permit processing of the data on the ground. Later in the mission, the GPS receiver software may be modified to permit the processing of signals on-board the satellite. The nanosatellite is based on Surrey Satellite Technology’s (SSTL) SNAP design and has a projected total mass of around 12 kg; orbit average power of approximately 4.8 W; three-axis attitude control of 1–2j; VHF uplink, S-band downlink at 500 kbps, and on-board computer (OBC) based on the StrongARM SA1100. Using the SSTL Nanosatellite Applications Platform (SNAP) design enables a fast manufacture at low cost: estimated at 9 months and around 2 million Euros, including launch. The proposed mission makes use of the Surrey Space Centre Mission Control ground station in Guildford (UK) for control and data gathering. Surrey Satellite Technology (SSTL) is a world leader in both nanosatellite and GPS technology for small satellites. Surrey Satellite Technology’s highly successful SNAP-1 nanosatellite launched in June 2000 demonstrated the potential of such small spacecraft, and this proposal involves the first ever use of a nanosatellite for a commercial application (GANDER) in collaboration with SOS (UK), a company specialising in oceanography from space. 2003 Lister Science." @default.
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- W1562200640 date "2002-01-01" @default.
- W1562200640 modified "2023-09-23" @default.
- W1562200640 title "A Nanosatellite to Demonstrate GPS Oceanography Reflectometry" @default.
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