Patent ID: 7525478
Filing Date: 2009-04-28
Classification: G01S

Abstract:
1. A radar signal processor comprising: two or more observation means for receiving a reflected wave from a target as a received signal through a receiving antenna and for outputting a predetermined observation signal; means for respectively extracting a distance component corresponding to a distance to a target to be detected from said receiving antenna from said each observation signal; means for estimating a correlation matrix, for collecting respective said extracted distance components and for computing and estimating an estimated value of a correlation matrix corresponding to said respective distance components with a forgetting factor corresponding to said each distance component as a parameter by an exponential smoothing method; means for estimating a presence and a movement state of a target, for estimating a presence of a target and movement state of said target on the basis of said respective estimated value of said correlation matrix which was estimated by said means for estimating correlation matrix; and means for determining a forgetting factor depending on distance, for respectively computing and determining said forgetting factors corresponding to said distance to said target to be detected from said receiving antennas, and for respectively outputting said computed and determined forgetting factors as said forgetting factors corresponding to said respective distance components to said means for estimating a correlation matrix.