多目标位置信息场直接定位法

Position Information Field Direct Position Determination for Multiple Targets

  • 摘要: 针对现有的多目标位置信息场定位法均采用先测量参数再进行定位的方法,提出一种直接利用采样数据进行定位的多目标位置信息场直接定位法. 该方法直接利用时域或频域采样数据在各个观测站进行目标位置信息场计算,然后对计算结果在定位中心进行融合处理得到多个目标的位置信息,无需测量目标的DOA等参数,避免了直接定位法中向定位中心传输大量的信号数据问题. 最后,通过计算机仿真实验验证该方法在低信噪比时定位性能优于采用DOA进行定位的传统位置信息场定位法,且性能更为稳定.

     

    Abstract: Existing position information field location methods for multiple targets first measure the parameters and then locate the targets. We propose a location method, called the position information field direct position determination for multiple targets, which is based directly on sampling data. This method uses time- or frequency-domain sampling data to directly calculate the position information field for each observation, and the calculated results are then sent to the location center to obtain the position of multiple targets through fusion processing. This method requires no measurement of target parameters, such as the direction of arrival (DOA). Compared with the direct position determination (DPD) method, our proposed method avoids the need to transmit a large volume of signal data to the location center. The simulation results show that the proposed method's positioning performance is superior to that of the traditional position information field location method that uses DOA, and has a low signal-to-noise ratio (SNR) and a more stable performance.

     

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