| 相干雷达高度表大地回波去相关研究与实验 |
| |
| 引用本文： | 李 娟,张 海,陈祝明,段 锐,成彬彬.相干雷达高度表大地回波去相关研究与实验[J].现代雷达,2012,34(5):73-76. |
| |
| 作者姓名： | 李 娟 张 海 陈祝明 段 锐 成彬彬 |
| |
| 作者单位： | 1. 电子科技大学电子工程学院,成都,611731
2. 中国工程物理研究院电子工程研究所,四川绵阳,621900 |
| |
| 基金项目： | 国家自然科学基金委员会与中国工程物理研究院联合基金(NSAF)资助项目 |
| |
| 摘 要： | 由于非刚体目标自身的变化或者刚体目标与雷达之间的距离、视角发生变化都会产生大地回波去相关现象.文中针对上述现象建立了大地回波的几何与幅度起伏模型,对机载相干雷达高度表回波特性进行了仿真研究.文中还利用S波段相干脉冲散射计开展了大地回波测量实验,对回波数据进行了相干处理,并对仿真结果进行了实验验证.仿真与实验的结果表明:大地回波的去相关损失取决于地面粗糙度以及载机在一个脉冲重复周期内移动的距离.
|
| 关 键 词： | 去相关 积累增益 相干脉冲散射计 |
Study and Experiment of
Coherent Radar Altimeter Terrain Return Decorrelation |
| |
| LI Juan,ZHANG Hai,CHEN Zhu-ming,DUAN Rui and CHENG Bin-bin.Study and Experiment of
Coherent Radar Altimeter Terrain Return Decorrelation[J].Modern Radar,2012,34(5):73-76. |
| |
| Authors: | LI Juan ZHANG Hai CHEN Zhu-ming DUAN Rui and CHENG Bin-bin |
| |
| Affiliation: | 1.School of Electronic Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China)(2.Institute of Electronic Engineering,China Academy of Engineering Physics,Mianyang 621900,China) |
| |
| Abstract: | Terrain return decorrelation is generated by the changes of non-rigid objects themselves or the distances and viewing angles between rigid objects and radar.In this paper,the geometric and amplitude fluctuation model of terrain surface is built,and then the characteristics of radar altimeter terrain return are simulated by the model.On this basis,an experimental program to measure the terrain return is carried out to verify the correctness of simulation results by using coherent pulsed S-band scatterometer.And the return data is processed cohenrently.The simulation and experimental results show that the terrain return incoherent loses depend on both the surface roughness and the distance that the aerialcarrier moved in a PRI. |
| |
| Keywords: | decorrelation accumulated gain coherent pulse scatterometer |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《现代雷达》浏览原始摘要信息 |
|
点击此处可从《现代雷达》下载全文 |
|
