Research On Missi1e-borne Squint SAR Algorithm And Jaimning Based On A Curve Locus

As an important application of SAR, Missile-borne SAR can greatly improvemissile guidance accuracy and combat accuracy, this pose a great threat in modernwarfare. In order to protect important military targets in the battlefield to seize afavorable position to win the war，research and development on Missile-borne SARjamming became a most urgent task.Missile-borne SAR platform moves in a curve locus and works in a squint modeldue to the special combat missions. The imaging algorithm in this model is differentfrom conventional SAR imaging algorithm. Theory of curve locus squint Missile-borneSAR is required before start research on curve locus squint Missile-borne jamming.In the paper, the basic principle of SAR imaging is introduced firstly, and then thetwo-dimensional frequency domain expression of the echo signal is achieved usingseries inversion theory. A new imaging algorithm of curve locus squint Missile-borneSAR is discussed based on the expression.Secondly, jamming on curve locus squint Missile-borne SAR is researched. Fromthe missile-borne SAR imaging algorithm Obtaining to start a detailed analysis of theinterference effect of two-dimensional shift-frequency interference, two-dimensionalsinusoidal FM interference, two-dimensional saw tooth FM interference,two-dimensional noise FM interference. Compared with non-coherent interference, dueto coherent interference can obtain part of SAR gain, the power required is significantlyreduced.Finally, the computer simulation for these interferences is accomplished.Simulation results show that the coherent interferences on curve locus squintMissile-borne SAR are efficient and reliable.