Analysis of Echo Signals from Low Altitude Radar Targets in Actual Landform

您当前的位置：

首页 >

文章列表页 >

Analysis of Echo Signals from Low Altitude Radar Targets in Actual Landform

更新时间：2025-07-09

- Analysis of Echo Signals from Low Altitude Radar Targets in Actual Landform
- Vol. 44, Issue 4, Pages: 103-107(2010)
- 作者机构：
  
  西安电子科技大学天线与微波技术国家重点实验室,西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN011
- Online First：10 April 2010，
  
  Published：2010
- 稿件说明：
移动端阅览
Analysis of Echo Signals from Low Altitude Radar Targets in Actual Landform[J]. 2010, 44(4): 103-107.
DOI：

Analysis of Echo Signals from Low Altitude Radar Targets in Actual Landform[J]. 2010, 44(4): 103-107. DOI：

摘要

针对低空雷达目标与杂波、环境难于一体化建模的问题

提出了一种分析真实地形环境中低空飞行目标的雷达回波信号的实景相干复合方法(CHIAL).以机载脉冲多普勒(PD)雷达为平台

首先将半空间并矢格林函数引入物理光学方法中

结合图形电磁学计算低空目标的雷达散射场强度

然后利用地形高程数据和地形地物分析数据

得到杂波单元的散射特性

通过相干杂波模型产生地杂波

最后将所有雷达回波送入各自的距离门

并加入噪声信号

模拟包含目标特性和杂波特性的有效回波信号.与传统复合建模方法相比

CHIAL方法的目标回波信号和杂波信号更加准确.对机载PD雷达探测低空目标的仿真实验表明

CHIAL方法在处理90 m×90 m地形高程数据时

杂波分布和信杂比与理论分析基本一致

有很强的系统工程实用价值.

Abstract

Focusing on the difficulty in integrative modeling among the low altitude radar targets

the ground clutter and the environment

a coherent hybrid method in actual landform(CHIAL)is proposed to analyze the echo signals from radar targets in actual landform environment. Based on airborne pulsed Doppler(PD)radar

a half-space physical optics integral equation is deduced by introducing the half-space Green's function into the physical optics method. The radar cross section of conductive targets is calculated in the half space by combining the graphical- electromagnetic computing method. The scattering of the clutter cell is computed with SRTM and DFAD data

and the ground clutter is produced by using the coherent clutter model. After mixing with noise

the signals are then sent into corresponding range gates. Simulations on the efficient echo signals with the target peculiarity and clutter peculiarity show that the proposed method is more accurate than traditional hybrid modeling methods. Numerical results on airborne PD radar detecting low altitude targets show that the clutter distribution and the signal-to-clutter ratio accord with the theoretical analysis in using 90 m×90 m landform height data

and that the method is applicable in system engineering.

关键词

Keywords

references

PRASAD N, SHAMEEM V, DESAI U B, et al. Improvement in target detection performance of pulse coded Doppler radar based on multicarrier modulation with fast Fourier transform [J]. IEE Proc Radar Sonar Navig, 2004, 151(1):11-17.

叶红霞, 汪文秉, 金亚秋. 预警雷达信号模拟的研究 [J]. 现代雷达, 2004, 26(6): 1-3.

YE Hongxia, WANG Wenbing, JIN Yaqiu. A study on early-warning radar signal simulation[J]. Modern Radar, 2004, 26(6): 1-3.

胡居荣, 曹宁, 鹿浩. 雷达杂波视频信号实时仿真与系统实现 [J]. 舰船电子对抗, 2007, 30(6): 74-95.

HU Jurong, CAO Ning, LU Hao. Real-time simulation and system realization for radar clutter video signal[J]. Shipboard Electronic Countermeasure, 2007, 30(6): 74-95.

梁志恒, 潘明海. 毫米波导引头目标回波和杂波模拟方法研究[J]. 系统仿真学报,2007, 19(12): 2723-2726.

LIANG Zhiheng, PAN Minghai. Method of target and clutter signal simulation for MMW seeker [J]. Journal of System Simulation, 2007, 19(12): 2723-2726.

LI Xiaofeng, XIE Yongjun, WANG Peng, et al. High-frequency method for scattering from electrically large conductive targets in half-space[J]. IEEE Antennas and Wireless Propagation Letters, 2007, 6(1): 259-262.

MICHALSKI K A, ZHENG D. Electromagnetic scattering and radiation by surfaces of arbitrary shape in layered media, part I: theory [J]. IEEE Trans Antennas Propagate, 1990, 38(3): 335-344.

YANG J J, CHOW Y L, FANG D G. Fast solution of mixed-potential time-domain integral equations for half-space environments[J]. IEEE Transactions on Geoscience and Remote Sensing, 2005, 43(2):269-279.

BROWNING D J, SUMMER J E. Computer modeling of ground clutter in airborne radar [J]. IEE Conf Radar, 1974, 44(5): 389-396.

ULABYl F T, DOBSON M C. Hand book of radar scattering statistics for terrain[M]. Norwood, MA, USA: Artech House, 1989.

武汉测绘学院控制测量教研室. 控制测量学[M]. 北京:测绘出版社,1988.

SKOLNIK M I. 雷达手册[M].王军,林强,米慈中,等译. 北京:电子工业出版社, 2003.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Electrothermal Coupling Research on the Evolutionary Law of Anti-Corona Performance for High-Altitude Air-Cooled Generators

Turbulent Kinetic Energy Dissipation Mechanism of Supercritical Carbon Dioxide Leakage Flow in a Scallop Bionic Seal Cavity

Study on the Thermodynamic Properties in the Anomalous Region of Supercritical Water

Energy Efficiency Optimization of the Cryogenic Air Separation Process for Electronic-Grade Ultra Pure Nitrogen

Windage Loss and Flow Characteristics in Impeller Back Gaps of sCO2 Radial Inflow Turbines

Related Author

No data

Related Institution

No data

⁰