Patent ID: 7164381
Filing Date: 2007-01-16
Classification: G01S

Abstract:
1. A target identifying apparatus for identifying a target from a first signal distribution obtained by a scan radar, the target identifying apparatus comprising: a calculation section that calculates a quadratic approximate expression in the first signal distribution, the first signal distribution including one of beam angles and frequencies as a parameter, the quadratic approximate expression having the one of the beam angle and the frequency corresponding to a maximum value of the first signal distribution at a center thereof; a target signal identifying section that identifies a signal contained in the quadratic approximate expression calculated by the calculation section as a single target signal, the target signal indicating the target; a subtraction section that subtracts a value of the quadratic approximate expression calculated by the calculation section from a value of the first signal distribution to generate a second signal distribution; and a correction section, wherein when the one of the beam angle and the frequency corresponding to a maximum value of the second signal distribution generated by the subtraction section is in a range in which the value of the quadratic approximate expression is subtracted from the value of the first signal distribution or is in a vicinity of the range, the correction section corrects the second signal distribution based on the quadratic approximate expression; when the correction section corrects the second signal distribution, the calculation section treats the corrected second signal distribution as a new first signal distribution; and when the correction section does not correct the second signal distribution, the calculation section treats the second signal distribution as a new first signal distribution.