提出了一种利用平面解三角，并结合辐射源信号到达方向和脉冲到达时间差对运动辐射源进行单站无源定位的算法。
An algorithm used trigonometry to passively locating a moving emitter with direction of arrival (DOA) and time difference of arrival (TDOA) of the emitter signal is given.
QDT MWD在使用中由于脉冲发生器充油不好掌握，常出现井下无信号现象。
Because the oil filling operation of the QDT MWD pulser is difficult to grasp, the logging signals often disappear when QDT MWD is used.
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