New Method Of High-resolution Synthetic Aperture Radar Interference

Synthetic Aperture Radar (SAR) is a kind of active microwave imaging radar. Itcan all-weather, all-day and timely get ground images of wide region and has finepenetrability to vegetation and ground. SAR is pretty important to resources exploitationand military reconnaissance. High-resolution SAR has been widely used in diverse fieldsof civil and military because of its high-reselution, strongly anti-jamming, andanti-destructive abilities.The paper researchs on the new jamming theory and new jamming method tohigh-resolution SAR. Through the analyse of the high-resolution SAR's system, theauthor finds the difficulties on the high-resolution SAR's interception and jamming .Inthe paper, the author validates the low probability of intercept of high-resolutionSAR.Then analyses the back ground clutter's characteristic ofhigh-resolution SAR and the serious influence to SAR target detectionand classification. Based on the analyzing jamming methods in existencesuch as noise jamming and cheat jamming, and the anti-jamming abilityof high-resolution SAR, the author puts forward a new matching jammingwhich is time, frequency and dopple fields multidimensional-matching-overcast similar clutter's jamming. Through the zero memorynonlinearity (ZMNL) method, generates of the correlated log normal,weibull and k-distributed clutter vectors. Because of the traditionalmethod of using digital frequency memorizer is inapplicable tohigh-resolution SAR jamming, the author deeply researchs the jammingtheory based on the leading of parameters, system predigested model andnarrowband signals pieceing together technology on high-resolutionjamming realization. Finally through the matlab emulator and theevaluation to SAR images after the jamming, the paper validated themethod's effectual to jam the high-resolution SAR.The main work and achievements are as follow:1. Analyses the system of high-resolution SAR, finds the difficulties on the...