Abstract:Single orbit bistaitc space based radar is composed of two radars in the same orbit. The paper analyzes the clutter angle-Doppler spectrum in this radar system, and finds out that minimum detectable velocity(MDV) is dependent on detecting angles and will degrade a lot in some angles. A new combined monostatic and bistatic radar mode with potential savings in size and weight of the solar array-battery system on-board each satellite is then introduced and angle threshold is calculated. Simulation results with Space-Time Adaptive Processing(STAP) also verify the improved detection performance.