CAJ | 학술논문

采用一种新颖的不连续特征双站雷达散射截面(RCS)测试方法,通过系列化测试,研究了单直缝隙板、单直台阶板的双站散射特性,提出了不连续特征双站散射具有相似性、对称性和平移性的特点,分析了不同不连续特征具有的异同点.试验结果表明:对不连续特征,不同双站下的RCS散射曲线均具有和对应入射频率下的单站散射曲线分布形式相似的特点,同时不同的不连续特征对幅值的影响不同;如果测试方式和试验件对称,则双站和单站散射曲线均具有关于峰值所在方位角对称的特点,单直缝隙板由于试验件本身的对称性表现为较好的曲线对称性,而单直台阶板则表现为稍弱的对称性;散射曲线随双站角的增大,具有明显的平移特性,平移的幅度为双站角的1/2,平移方向为从发射天线指向接收天线,平移后的曲线峰值处于发射天线和接收天线夹角平分线上.
채용일충신영적불련속특정쌍참뢰체산사절면(RCS)측시방법,통과계렬화측시,연구료단직봉극판、단직태계판적쌍참산사특성,제출료불련속특정쌍참산사구유상사성、대칭성화평이성적특점,분석료불동불련속특정구유적이동점.시험결과표명:대불련속특정,불동쌍참하적RCS산사곡선균구유화대응입사빈솔하적단참산사곡선분포형식상사적특점,동시불동적불련속특정대폭치적영향불동;여과측시방식화시험건대칭,칙쌍참화단참산사곡선균구유관우봉치소재방위각대칭적특점,단직봉극판유우시험건본신적대칭성표현위교호적곡선대칭성,이단직태계판칙표현위초약적대칭성;산사곡선수쌍참각적증대,구유명현적평이특성,평이적폭도위쌍참각적1/2,평이방향위종발사천선지향접수천선,평이후적곡선봉치처우발사천선화접수천선협각평분선상.
The bistatic and multi-azimuth scattering characteristics of single-straight-gap and single-straight-step plates are studied by a series of radar cross section (RCS) testing which is based on a novel experimental method for the bistatic RCS of surface discontinuous characters. For the bistatic RCS curves of surface discontinuous characters, such characteristics as resemblance, symmetry and translation are presented and the rules of different surface discontinuous characters are analyzed. The results show that different bistatic angle RCS curves are similar to the corresponding monostatic RCS curves, and that different surface discontinuous characters have different influences on RCS magnitude. If the testing method and plates are symmetrical, then bistatic and monostatic RCS are symmetrical with regard to curve peak azimuth, while the RCS curve symmetry of a gap plate is better than that of a step plate because of the gap plate symmetry. Bistatic curves are translated more obviously with the increase of bistatie angle and the translation magnitude is half that of the bistatic angle. The translated direction is pointing to the receiver antennas from the transmitter antennas. The peak of RCS curves is located on the centerline of the angle between the transmitter and receiver antennas.