机载雷达探测精度评估方法研究  

Research on Evaluation Method of Detection Precision of Airborne Radar

作　　者：任清安[1] 赵洪立[1] 刘军伟[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《雷达科学与技术》2011年第1期29-33,共5页Radar Science and Technology

摘　　要：影响机载雷达探测精度的主要因素是惯导系统的导航误差和机载雷达的量测误差。严格分析了惯导系统的导航误差和雷达的探测误差在各阶段坐标变换中对机载雷达探测精度的影响,并根据误差传递理论详细推导了机载雷达探测数据在机体坐标系、载机惯性坐标系、WGS-84地心直角坐标系、地面站坐标系或大地坐标系中的探测精度的计算公式,并进行了实例计算。计算结果表明,所提出的机载雷达探测精度评估方法是符合工程实际的。The main factors that affect detection precision of airborne radar are INS navigation errors and airborne radar measurement errors.In this paper,how the INS navigation errors and airborne radar measurement errors affect detection precision of airborne radar is strictly analyzed in the process of coordinate transformation.Then,the detection precision of airborne radar in aircraft body coordinate system,carrier aircraft inertial coordinate system,WGS-84 geocentric Cartesian coordinate system,geodetic coordinate system and ground station coordinate system are derived in detail according to error propagation theory.Some examples are also presented in the paper.The results indicate that the presented evaluating method is more suitable for practical engineering.

关 键 词：导航误差 姿态角误差 机载雷达探测误差 坐标变换 误差传递理论 

分 类 号：TN959.73[电子电信—信号与信息处理] P226[电子电信—信息与通信工程]