南京理工大学学报（自然科学版）Issue(6)：707-714,8.
基于keystone变换的噪声调频连续波雷达高速目标探测
High speed moving target detection using noise modulated continuous wave radar based on keystone transform
摘要
Abstract
In order to solve the problem of Doppler dispersion effect caused by high speed motion of targets,a range migration compensation method is proposed based on keystone transform. According to the feature of aperiodicity of noise frequency modulated continuous wave, frequency domain correlation based on the equal interval piecewise method of overlapping is adopted to echo signals. Combined with fast discrete time scale transformation, effective long time coherent integration is achieved. Multiple targets can be detected simultaneously without prior knowledge. The method proposed here is compared with the traditional time domain correlation method and analyzed,and its effectiveness is verified by simulation experiments. Without range migration of targets,the promotion of output signal-to-noise ratio of the time domain correlation method and the method proposed here is equal basically. With range migration of targets,the output signal-to-noise ratio of the time domain correlation method decreases rapidly, and its deterioration is proportional to migration severity, but the output signal-to-noise ratio of the method proposed here after range migration compensation is not affected by the speed of targets and increases with the increase of accumulating time.关键词
keystone变换/噪声调频连续波雷达/高速目标/多普勒色散/等间隔重叠分段法/距离徙动Key words
keystone transform/noise frequency modulated continuous wave radar/high speed moving targets/Doppler dispersion effect/overlapping equal interval piecewise method/range migration分类
信息技术与安全科学引用本文复制引用
吕婧,顾红,苏卫民,薄超..基于keystone变换的噪声调频连续波雷达高速目标探测[J].南京理工大学学报（自然科学版）,2014,(6):707-714,8.基金项目
国家自然科学基金(61471198) （61471198）
部预研基金(9140A07010713BQ02025) （9140A07010713BQ02025）
教育部博士点基金(20113219110018) （20113219110018）
中国航天科技集团公司航天科技创新基金(CASC04-02) （CASC04-02）
