Abstract: In view of the large dynamic range, uncontrollable flight attitude, and free tumbling of rocket debris, this article first analyzes the complexity of the flight environment, and then discusses the principle of using the RNSS+RDSS scheme for rocket debris recovery. It focuses on analyzing and deriving the improvement measures taken by the RNSS receiver and the frequency compensation scheme required for RDSS short message communication. Then, using a ground test system, the recovery terminal is simulated and verified. The results show the feasibility of the scheme.