Patent ID: 7535410
Filing Date: 2009-05-19
Classification: G01S,H01Q

Abstract:
1. A weight calculation method for performing weight control for a target reflection signal to form a reception composite beam, the method, comprising: storing the target reflection signal of a radar pulse received via an antenna into cells corresponding to positions in accordance with a reception timing for a plurality of processing range cells having lengths equivalent to prescribed ranges on a time axis; calculating weights by stage for a phase and amplitude of the target reflection signal to form the reception composite beam so that arrival directions of spurious elements become zero to an arrival direction of the target reflection signal by using values stored in the plurality of processing cells; and performing weight control of the target reflection signal using the weights to form and output the reception composite beam, wherein the calculating of the weights monitors a change of specific variables indicating correlation values among stages in the plurality of processing stages to stop a shift to the next processing stage at the time when the variables exceed a reference value.