摘要
利用GPS直达波方位角和俯仰角、目标反射波方位角和俯仰角来得到直达波与反射波之间的夹角。通过直达波到达雷达所用时间、直达波与反射波到达时间差以及直达波与反射波之间的夹角,可以得到目标与雷达之间的距离。用反射波的俯仰角和目标与雷达间的距离即可得到目标的坐标值。仿真了各种变量误差对目标与雷达间距离的影响。结果表明:若能把直达波和目标反射波角度测量误差以及信号时延误差控制在合理的范围内,该方法可以实现对雷达目标的有效定位。
It uses GPS direct wave azimuth and elevation angle, target reflected wave azimuth and elevation angle to get the angle between direct wave and reflected wave. Through the time that the direct waves reaching radar, time lag between reflection wave arrived and direct wave and the angle between reflected wave and direct wave, we can get the distance between the target and the radar. Finally, we can get the target coordinates through the target reflected wave azimuth and elevation angle and distance between the target and radar can get. Through simulation, we get various variable error influence to the distance between the target and the radar. The result show that if the direct wave and reflected wave angle measurement error and the signal delay error within reasonable limits, the method can achieve effective positioning of the radar target..
出处
《全球定位系统》
2011年第4期19-22,28,共5页
Gnss World of China
