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Method of Experimental Verification of Accuracy of UAV Antenna Phase Center Motion Parameters Determined by Navigation System

机译:导航系统确定无人机天线相中心运动参数精度的实验验证方法

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The paper addresses the problem of verification of a micronavigation system appropriateness for determining the parameters of antenna phase center (APC) motion in order to synthesize its aperture onboard an unmanned aerial vehicle (UAV). A method is proposed for the analysis of the accuracy of APC positioning in real flight conditions. Trajectory signal from a monochromatic stationary source of radio-frequency (RF) emission is used as reference measurements. The accuracy of the range to the source measured by the micronavigation system is estimated, with an emphasis on the analysis of high-frequency component of measurement error. Hardware for the proposed method implementation is described, and the results of inflight tests are presented. It is demonstrated that the accuracy of APC positioning towards the RF emission source is determined at the level of measurement errors caused by the phase instability of reference oscillators within the receiver modules.
机译:本文解决了验证微导航系统是否适合确定天线相位中心(APC)运动参数以便在无人飞行器(UAV)上合成其孔径的问题。提出了一种分析实际飞行条件下APC定位精度的方法。来自射频(RF)发射的单色固定源的轨迹信号用作参考测量。估计了由微导航系统测量的到源的距离的准确性,重点是分析测量误差的高频分量。描述了用于所提出的方法实现的硬件,并给出了飞行测试的结果。事实证明,APC朝向RF发射源的定位精度是由接收机模块内参考振荡器的相位不稳定性引起的测量误差确定的。

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