| 摘要 |
PROBLEM TO BE SOLVED: To appropriately perform correlation processing, while taking the fluctuations in the Doppler frequency into consideration. SOLUTION: The velocity of a position calculation system 1 is calculated, by unifying a velocity calculated by an INS unit 50 and a GPS unit 60, and the velocity detected by a velocity and azimuth sensor units 70, 80. Moreover, a Doppler error is determined, by using a velocity error calculated by the INS unit 50 and the GPS unit 60, and a velocity error detected by the velocity and azimuth sensor units 70, 80. Then the Doppler frequency is determined, by using a velocity determined by a GPA 15, and a correlation integrated time is determined by using the determined Doppler error. the positions calculated by the INS unit 50 and the GPS unit 60 are unified, and the position of the position calculation system 1 is calculated. COPYRIGHT: (C)2011,JPO&INPIT
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