Research on two algorithms for multiple frequency CW radar ranging

This paper analyses the limitation of the algorithm of stagger multiple frequency for CW radar, and two algorithms are proposed. They are the algorithm of multiple frequency to dual frequency and the algorithm of quadratic phase difference. Their principles are introduced. Finally, two algorithm are compared with each other, simulation result is also given. The simulation result shows that two algorithms both reach high ranging accuracy. They have equivalent ranging accuracy if their maximal unambiguous ranges of the last dual frequency are the same.