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Research on human intruder detection and localization based on LCX sensor

机译：基于LCX传感器的人体入侵检测与定位研究

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摘要

Many aspects of the intruder detection system (IDS) based on the LCX sensor are still unknown due to its complex propagation characteristics. In order to study the field disturbance mechanism of human intruder and to reduce the phase error caused by the initial state of the detection signal, a novel method of improving the localization accuracy is proposed. At the frequencies of 40, 100, and 200MHz, the IDS based on the LCX sensor is proposed by analyzing the scattering characteristics of the radar cross section (RCS) of human intruder and using IQ demodulation method. According to the characteristics of the IDS, the RCS is obtained by irradiating the human intruder from three typical radiation directions, which are front, side, and low-side direction in the mentioned frequency range. Combined with the method of pulse accumulation and synchronous subtraction, the intruder localization can be easily realized by using pulse delay positioning method. The results demonstrate the improvement in localization accuracy and the decrement in false positive rate, and the positioning error is less than 1m.
机译：由于其复杂的传播特性，基于LCX传感器的入侵者检测系统（IDS）的许多方面仍然未知。为了研究人类入侵者的场干扰机制，减少由检测信号的初始状态引起的相位误差，提出了一种提高定位精度的新方法。通过分析人体入侵者雷达截面（RCS）的散射特性并采用IQ解调方法，提出了在40、100和200MHz频率下的IDS。根据IDS的特性，通过从三个典型的辐射方向（在所述频率范围内的正面，侧面和下边方向）照射人类入侵者，可以获得RCS。结合脉冲累加和同步减法，可以通过脉冲延迟定位方法轻松实现入侵者定位。结果表明，定位精度得到了提高，误报率下降，定位误差小于1m。

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