|発明の名称||METHOD AND DEVICE FOR ORIENTING TRACK FROM SAILING BODY RADIANT NOISE|
PROBLEM TO BE SOLVED: To orient the track of a sailing body from the radiant noise of the sailing body on the basis that the reception of the radiant noise of the sailing body of unknown synchronous absolute time by three receivers or more allows the detection of the arrival time difference of the radiant noise to each receiver.
SOLUTION: The radiant noise of the sailing body is received by the three receivers S1-SN or more, and each reception signal after FFT processing is processed at a sailing noise frequency band by band pass filter processors 13-1 to 13-N and then subjected to Doppler correction. Cross-correlation processing is performed on the reception signals subjected to Doppler correction by cross-correlation at an assumed arrival time difference detector 17 on each combination of two receivers among the receivers to compute an assumed arrival time difference curve. Then variation in the location of the sailing body and variation in unknown bias are obtained at a computing unit 18 for computing variation in the location of the sailing body and variation in unknown bias. From them, the real arrival time difference of the radiant noise is detected at a detector 19 for detecting the real arrival time difference of the radiant noise. The location of the sailing body is computed at an orienting device 20 for orienting the track of the sailing body to orient the track.
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