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为解决地平式跟踪架在天顶附近易丢失跟踪目标和克服天顶盲区对系统跟踪能力的影响 ,分析探讨了天顶盲区的形成。结果表明 ,跟踪架最大方位角速度、目标的飞行高度和飞行速度这 3个参数决定了天顶盲区范围 ;全面分析了影响近天顶跟踪性能的因素 ,并以具体跟踪数据验证了主要影响因素在不同跟踪条件下的变化规律。结果表明 ,跟踪低速目标时主要受不灵敏区、随机误差两项因素影响。
In order to solve the problem that the track-type stanchion frame can easily lose the tracking target near the zenith and overcome the influence of the zenith blind spot on the tracking ability of the system, the formation of the zenith blind zone is analyzed. The results show that the maximum azimuthal velocity of the tracking frame, the target flight altitude and the flight velocity determine the range of the zenith blind zone. The factors affecting the near-zenith tracking performance are analyzed in detail. The main influencing factors are verified by the follow-up data Variation under different tracking conditions. The results show that tracking low speed target is mainly affected by insensitive zone and random error.