In the past few decades, the target location methods in transmit/receive-receive (T/R-R) synergetic High Frequency Surface Wave Radar (HFSWR) have received extensive attention from the signal processing community. However, there are few studies on the method of parameter pair-matching for multi-target scene. In this paper, a computationally efficient multi-target pair-matching method based on angle information only in T/R-R synergetic HFSWR is developed. The proposed method is realised by dealing with three vectors composed of the first column, the first row and diagonal entries of the correlation matrix, instead of performing the singular value decomposition (SVD) of the correlation matrix. Simultaneously, the proposed method is a computationally efficient subspace algorithm, which only uses the angle information to complete the purpose of multi-target pair-matching. The simulation results are presented to demonstrate the effectiveness of the proposed method.
In the past few decades, the Time Difference of Arrival location technology in distributed high‐frequency surface wave radar has attracted wide attention due to its simple system, low cost, and higher positioning accuracy. Based on the time difference direction‐finding algorithm, this article presents new mathematical expressions of geometric dilution of precision in the Time Difference of Arrival positioning systems. The time difference direction‐finding reveals that the angle measurements are accurate for any length of baseline. Then the differences in geometric dilution of precision between the proposed algorithm and traditional method are analysed. Time difference direction‐finding algorithm can improve positioning accuracy without additional target information. Compared with the traditional method, the proposed algorithm can improve the positioning accuracy of partial observation areas under the same radar measurement system. The simulation results are presented to demonstrate the effectiveness of the proposed algorithm.
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