With the development of the Satellite navigation technology and navigation receiver technology,small size,good dynamic performance,data processing of high precision navigation receiver has been widely used in Kinematic positioning and navigation.Three dimensional Cartesian or geodetic receivers own has been calculated by using the navigation signal receiver for receiving multiple satellite navigation message and measurement information which has been processed throwing the pure geometric and the least square method.In most cases of the actual engineering application,the relative position and relative motion between two moving bodies should be known.For example,space rendezvous and docking aircraft,the spacecraft on orbit service,mobile robot control,rescue and so on.How to determine the relative motion between two movements is a broad background of the actual technical problems.In this paper,two moving bodies respectively carry receiver module case,through a simple signal receiving and transmitting device to relative navigation.A set of practical algorithm for determining the relationship between relative motions is established.Including determination algorithm and relative speed of the relative position of the moving body,a method of the realization of the two moving body relative navigation has been given.The research results of this thesis have important value for the autonomous rendezvous,mobile robot control and networking scheduling space target.