METHOD FOR RADAR ANGLE ESTIMATION

• Main Authors: Loesch, Benedikt, Hipke, Arthur, Qu, Jingyuan
• Format: Patent
• Language: English
• Published: 31.10.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

A method for angle estimation based on signals of a radar sensor with angular resolution in at least one dimension. The radar sensor includes a MIMO-enabled antenna array with at least three transmitting antennas and at least three receiving antennas. A cross-path model represented by a control matrix and models reflections of transmitted and/or received signals on a reflective surface is used to estimate a location angle of a radar target. The control matrix includes a Kronecker product Atx ⊗Arx of two submatrices, one, Atx, representing the arrangement of the transmitting antennas and the other, Arx, representing the arrangement of the receiving antennas. For calculating a DML estimation function, a matrix product Y=AHrx·X·A*tx is calculated approximately using an FFT from the submatrices and a reception matrix X that specifies the complex amplitudes of the signals received with different combinations of antennas.