CAJ | 학술논문

圆周合成孔径雷达因其独特优势已经成为雷达领域的研究热点。分析圆周合成孔径雷达与线性合成孔径雷达在成像区域大小、点散布函数特性、回波频谱特点、三维成像能力等方面的差异，凸显了圆周合成孔径雷达的成像特点。发现单航过圆周合成孔径雷达频域成像处理的难点在于其回波频谱的空变性。为提高频域成像处理的效率，分析了平面圆周合成孔径雷达与多航过圆周合成孔径雷达成像模式，并指出这两种模式易于在频域开展一致化处理。仿真试验证明了分析内容的正确性。
원주합성공경뢰체인기독특우세이경성위뢰체영역적연구열점。분석원주합성공경뢰체여선성합성공경뢰체재성상구역대소、점산포함수특성、회파빈보특점、삼유성상능력등방면적차이，철현료원주합성공경뢰체적성상특점。발현단항과원주합성공경뢰체빈역성상처리적난점재우기회파빈보적공변성。위제고빈역성상처리적효솔，분석료평면원주합성공경뢰체여다항과원주합성공경뢰체성상모식，병지출저량충모식역우재빈역개전일치화처리。방진시험증명료분석내용적정학성。
With its intrinsic characteristics,circular synthetic aperture radar has lately become a particular interest to the radar community. The differences of imaging processing between the circular synthetic aperture radar and linear trajectory synthetic aperture radar were compared and analyzed.The detailed comparisons containing the size of the observed area,the properties of the point spread function,and the properties of echo spectrum were carried out.It was learnt that the difficulty of the imaging processing of single-pass circular synthetic aperture radar lies on its space dependence.To overcome this difficulty,the plane circular synthetic aperture radar and multi-base line circular synthetic aperture radar imaging models were analyzed.Simulation test was carried out and the corresponding results prove the proposed analysis is valid.