| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a radar device which can correctly estimate a compensation quantities for a range and a phase and form an ISAR(inverse synthetic aperture radar) image even when the acceleration of a target is large. SOLUTION: This radar device is equipped with a movement quantity estimating circuit 513 which estimates the Doppler movement quantity of a reflected wave (receive signal) from the target according to a Doppler history generated by a short-time Fourier transformation circuit 517, a phase-distance converting means 2 which calculates secondary distance variation of the target with the time from the Doppler movement quantity, and a higher-order range compensation circuit 6 which removes the calculated secondary distance variation.</p> |
