Texas Instruments Incorporated
NOISE-MITIGATED RADAR SYSTEM

Abstract:

An apparatus comprises a transmitter that transmits a signal, a receiver, a multiplier, and a signal shifter included in one of the transmitter and the receiver. The receiver receives a reflected signal comprising an interferer signal with at least one of an amplitude noise or a phase noise and generates a baseband signal comprising a real portion and an imaginary portion. The multiplier multiplies the imaginary portion by a value .beta. chosen based on a power difference .alpha. between the amplitude noise and the phase noise, resulting in a modified baseband signal. The signal shifter shifts the interferer signal and the modified baseband signal. An estimator can process the reflected signal and estimate a frequency and phase of the interferer signal for the signal shifter. The value .beta. can be represented as: .beta. = 1 .alpha. 2 ##EQU00001## where .alpha. represents the power difference between the amplitude noise and the phase noise.