Improvement of coherent integration with range migration using keystone formation in space/ground multistatic radar

The multistatic radar cross section of the stealthy objects is obvious higher than that of the monostatic radar. Using the multistatic radar based on geosynchronous/ground can improve the detecting probability of stealthy targets. Under the condition of employing space-based multistatic radar configuration ,the integration and detection methods for such long dell time should deal with the problem resulting from target-cell-crossing . This paper presents a Keystone transform method based on arrival-signals for long-time coherent integration. The new method is described with mathematical analysis and modeling. The effectivity is confirmed by the simulation results.