Method of calibrating an adaptive antenna array of a satellite navigation system
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United States of America Patent
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Dec 4, 2007
Grant Date -
Jul 28, 2005
app pub date -
Nov 17, 2004
filing date -
Nov 19, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of calibrating an adaptive antenna array that applies beamsteering (1) of a satellite navigation system comprises receiving signals from a plurality of satellites at a plurality of receivers (2) within the system. The satellite direction relative to the antenna array orientation for each satellite signal is determined (5); and the received signals are despread (8) to recover satellite signals. Gain and phase information is calculated from the despread code for a given satellite in a given direction; and the calculated gain and phase information are stored in a manifold store (4) at a predetermined address related to the direction of arrival of the satellite signal.
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