Experimental Investigation of the Coordinate Estimation Algorithm for the Local Navigation System With Signals Time Division

Alternative sources of absolute positioning to global navigation satellite systems are currently being investigated, including local navigation systems. The most promising type of signals used in local navigation systems are ultra-wideband signals. Their peculiarity is low influence of multipath propagation in case of re-reflection. The disadvantage is significant attenuation during propagation. The maximum range is 300 meters. The purpose of the work is to develop and experimentally evaluate the effectiveness of the algorithm for estimating the coordinates of the consumer taking into account the instability of the reference oscillators of all devices. As a result of the work was synthesized algorithm for estimating the coordinates of the consumer taking into account the known height of the consumer. RMS deviation of the consumer coordinates in steady state does not exceed 3 cm, The transient time is 55 clock cycles of the filter operation.