系统工程与电子技术
繫統工程與電子技術
계통공정여전자기술
SYSTEMS ENGINEERING AND ELECTRONICS
2014年
11期
2178-2185
,共8页
但波%姜永华%李敬军%卢毅
但波%薑永華%李敬軍%盧毅
단파%강영화%리경군%로의
高分辨距离像%功率谱互相关系数%等间隔角域划分%自适应角域划分
高分辨距離像%功率譜互相關繫數%等間隔角域劃分%自適應角域劃分
고분변거리상%공솔보호상관계수%등간격각역화분%자괄응각역화분
high resolution range profile (HRRP)%power spectrum cross-correlation coefficient%uniform frame segmentation%adaptive angular-sector segmentation
雷达高分辨距离像（radar high resolution range profile，HRRP）具有姿态敏感性的特点，一种有效的方法是分别对一组不发生散射点越距离单元走动角域范围内的 HRRP 样本进行处理。提出基于 HRRP 回波功率谱的顺序判别自适应分帧算法，通过对全局 HRRP 样本进行迭代搜索来确定数据划分边界，并自适应划分角域个数。所提方法依据散射点模型理论，考虑功率谱互相关系数变化规律，有效抑制了 HRRP 存在“距离像起伏剧烈”的样本。与自适应高斯分类器划分角域方法相比，所提方法在样本数据较小的情况下，仍可以有效地对目标进行角域划分。同时，与传统的利用互相关系数分帧方法和等间隔角域划分方法相比，所提方法可以有效降低识别运算量，减少识别算法处理时间，通过对3类舰船目标的仿真和3类民用船只的外场实测数据分析，表明所提方法是有效的。
雷達高分辨距離像（radar high resolution range profile，HRRP）具有姿態敏感性的特點，一種有效的方法是分彆對一組不髮生散射點越距離單元走動角域範圍內的 HRRP 樣本進行處理。提齣基于 HRRP 迴波功率譜的順序判彆自適應分幀算法，通過對全跼 HRRP 樣本進行迭代搜索來確定數據劃分邊界，併自適應劃分角域箇數。所提方法依據散射點模型理論，攷慮功率譜互相關繫數變化規律，有效抑製瞭 HRRP 存在“距離像起伏劇烈”的樣本。與自適應高斯分類器劃分角域方法相比，所提方法在樣本數據較小的情況下，仍可以有效地對目標進行角域劃分。同時，與傳統的利用互相關繫數分幀方法和等間隔角域劃分方法相比，所提方法可以有效降低識彆運算量，減少識彆算法處理時間，通過對3類艦船目標的倣真和3類民用船隻的外場實測數據分析，錶明所提方法是有效的。
뢰체고분변거리상（radar high resolution range profile，HRRP）구유자태민감성적특점，일충유효적방법시분별대일조불발생산사점월거리단원주동각역범위내적 HRRP 양본진행처리。제출기우 HRRP 회파공솔보적순서판별자괄응분정산법，통과대전국 HRRP 양본진행질대수색래학정수거화분변계，병자괄응화분각역개수。소제방법의거산사점모형이론，고필공솔보호상관계수변화규률，유효억제료 HRRP 존재“거리상기복극렬”적양본。여자괄응고사분류기화분각역방법상비，소제방법재양본수거교소적정황하，잉가이유효지대목표진행각역화분。동시，여전통적이용호상관계수분정방법화등간격각역화분방법상비，소제방법가이유효강저식별운산량，감소식별산법처리시간，통과대3류함선목표적방진화3류민용선지적외장실측수거분석，표명소제방법시유효적。
Radar high resolution range profile (HRRP)is very sensitive to target gesture variation.An effective method is to deal with the HRRPs within an angular-sector boundary in which a set of scattering points will not migrate through resolution cells.A mathematical model based on the power spectrum cross-correlation coefficient method is proposed,which determines the target aspect sector boundary based on the global HRRPs with the iteration algorithm,and the target aspect sector number can be determined simultaneously.Based on the scattering points model theory,the proposed method takes into consideration the change rule of the power spectrum cross-correlation coefficient to effectively suppress HRRPs’“violent fluctuation”samples.Compared with the adaptive Gaussian classifier angular-sector segmentation method,the proposed method can effectively divide targets’angular-sector with less samples.Compared with the traditional frame segmentation method based on the cross-correlation coefficient and the traditional uniform frame segmentation method,the proposed method can effectively reduce the recognition time and computation complexity.Experimental results based on three types of warships and three kinds of civilian vessels field measured data show the efficiency of the proposed method.
