火力与指挥控制
火力與指揮控製
화력여지휘공제
Fire Control & Command Control
2015年
11期
98-101
,共4页
颜佳冰%李晓明%李伟%吴昊天%张群
顏佳冰%李曉明%李偉%吳昊天%張群
안가빙%리효명%리위%오호천%장군
合成孔径雷达%大斜视%优化Frank序列%循环算法
閤成孔徑雷達%大斜視%優化Frank序列%循環算法
합성공경뢰체%대사시%우화Frank서렬%순배산법
SAR%large squint angle%optimized frank sequence%cyclic algorithm
合成孔径雷达(SAR)基于距离压缩和方位压缩获得二维高分辨率,但应用于低飞大斜视平台时因飞行高度低、速度快和斜视角过大等因素难于获得良好成像性能.针对低飞大斜视SAR成像问题,从波形设计角度出发,基于循环算法对多相编码Frank序列优化,得到具有良好自相关特性的编码序列,在满足多普勒容限条件下,与合理的脉冲重复频率相结合,克服了多普勒模糊,提高了成像分辨率,实现了良好的成像性能.仿真分析证明优化后的Frank序列可应用于低飞大斜视SAR并提供良好成像性能.
閤成孔徑雷達(SAR)基于距離壓縮和方位壓縮穫得二維高分辨率,但應用于低飛大斜視平檯時因飛行高度低、速度快和斜視角過大等因素難于穫得良好成像性能.針對低飛大斜視SAR成像問題,從波形設計角度齣髮,基于循環算法對多相編碼Frank序列優化,得到具有良好自相關特性的編碼序列,在滿足多普勒容限條件下,與閤理的脈遲重複頻率相結閤,剋服瞭多普勒模糊,提高瞭成像分辨率,實現瞭良好的成像性能.倣真分析證明優化後的Frank序列可應用于低飛大斜視SAR併提供良好成像性能.
합성공경뢰체(SAR)기우거리압축화방위압축획득이유고분변솔,단응용우저비대사시평태시인비행고도저、속도쾌화사시각과대등인소난우획득량호성상성능.침대저비대사시SAR성상문제,종파형설계각도출발,기우순배산법대다상편마Frank서렬우화,득도구유량호자상관특성적편마서렬,재만족다보륵용한조건하,여합리적맥충중복빈솔상결합,극복료다보륵모호,제고료성상분변솔,실현료량호적성상성능.방진분석증명우화후적Frank서렬가응용우저비대사시SAR병제공량호성상성능.
Synthetic Aperture Radar (SAR) gets two dimensional high resolutions through range and azimuth compression,but it will have difficulty in imaging when the platform has low height,high speed and large squint angle. Corresponding to the imaging problem,Frank code sequence is optimized with Cyclic Algorithm and used as the transmitted signal. Good correlation performance of Frank sequence,combined with proper PRF,help the SAR eliminate Doppler ambiguity and enhance the resolution of imaging,finally good imaging performance is gotten. Simulation results testified the good imaging performance brought by the optimized Frank sequence and proper PRF value.
