Vector Velocity and Position Measurement Using a 77-GHz Cooperative Radar System

We present a 77 GHz cooperative radar system, which uses two standalone FMCW radar sensors for vector velocity and positioning measurements. The system is based on a decentralized signal processing approach, where sampled data from only one sensor is used for full 2-dimensional localization and velocity measurement of a target. The information is also used for direction-of-movement (DOM) estimation. Frequency and phase calibration for the bistatic beat responses is accomplished by using a known reference target and corresponding signal processing algorithms. Measurement results show the applicability of the proposed system for target tracking, localization and 2-dimensional velocity measurements. The average deviation for DOM estimation is better than 1.1 degree and an average velocity error of approximately one percent is achieved.