SYNTHETIC APPERTURE RADAR SYSTEM, PLATFORM POSITION MEASUREMENT SYSTEM USED FOR IT, AND STORAGE MEDIUM HAVING RECORDED ITS CONTROL PROGRAM THEREON

PROBLEM TO BE SOLVED: To provide a synthetic apperture radar platform position measurement method capable of accurately measuring the position of a missile for correcting the oscillation of the missile without adding any special device or performing any complex calculation, preventing deterioration in resolution, and detecting a small fluctuation of the earth's crust by a differential interference type SAR technique. SOLUTION: An electronic wave from the ground being received by a transmission/reception antenna 12 is amplified and detected by a receiver 13 and is outputted as SAR reception data. The SAR reception data are recorded in a data-recording device 15 along with platform position measurement data being measured by a position/attitude-measuring device 14. A precise position- calculating device 17 calculates platform precise position data from the data after observation. An SAR image reproduction processing device 16 performs an SAR image reproduction processing including a platform oscillation correction processing from the SAR reception data and platform precision position data.