Patent ID: 9007258
Filing Date: 2015-04-14
Classification: G01S

Abstract:
1. A radar device comprising: a plurality of antennas that send out radio waves and receive waves reflected from at least one target and a signal processing unit that processes the receive signals received by said plurality of antennas using a predetermined angle estimation system, estimates directions of arrival of the reflected waves, and calculates receive powers of the reflected waves to detect targets, said signal processing unit further comprising: an angle detecting unit that detects angles of directions of arrival of said reflected waves based on angles of peaks of the receive signals of the antennas, a memory that stores mode vectors that are found as theoretical values or measured values for predetermined angles, a mode vector calculating unit which finds mode vectors for said detected angles by reading the mode vectors out from the memory, a vector combining portion that generates a combined vector by combining the peak powers after FFT processing of the receive signal used for the angle detection, a decomposing unit that uses the mode vectors as the basis to decompose the combined vector into vectors of directions of the mode vectors, and a power value calculating unit that calculates the magnitudes of vectors of the mode vector directions of the decomposed receive signal as power values of the detected angles.