舰载雷达天线测角误差分析

Angular Error Analysis of Shipboard Radar Antenna

为了分析舰船姿态角对雷达测角误差的影响,根据舰船姿态角与目标空间位置的三维立体关系,建立误差模型的量化公式。利用坐标系中Z轴指向的变化分析测角误差变化的新思路,得出偏航角不影响误差的变化,俯仰角与方位角误差曲线变化的趋势相反,测角误差的最大值可以预测的结论。计算机仿真结果验证了结论的正确性。

To analyze the effect of ship attitude angle to angular error measurement, the quantitative formulas of error model were constructed by the three-dimension geometry relation between the ship attitude and target position. By using the change of Z axis of the coordinate to clarify the angular error, the conclusions were reached. The yaw does not affect the angular error. The angular-error cu_rvilinear trend of the elevation and the azimuth change reversely. And the angular error maximum can be forecasted. The computer simulations testify the correctness of the conclusions.