数值法修正雷达高仰角动态滞后误差研究

Numeric Modification to Dynamic Error of Radar High Elevation

脉冲雷达在高仰角跟踪过程中存在不容忽视的动态滞后误差,该类误差的存在严重影响到雷达数据处理和弹/轨道精密确定.目前外测数据处理领域采用的基于误差电压和定向灵敏度的动态滞后误差修正模型,修正效果不理想.本文提出了一种用数值法修正雷达高仰角动态滞后误差的方法,并用任务实测数据进行了模型验证,结果显示这种方法能有效地降低动态滞后引起的误差。

Pulse radar will encounter significant dynamic delay error when tracking spacecraft at a high elevation and the error will affect trajectory accuracy. Results from voltage error and directional sensitivity models used in current metric data processing are not yet satisfactory. This paper puts forward a new numeric model, Simulation with actual mission data shows that the new model significantly reduces lag error and improves the accuracy of data processing.