For subnanosecond low intensity of wireless network signal with representative Beidou Satellite navigation signal is difficult to obtain accurate time estimation and Angle estimation in the positioning, and easy to be affected by environmental noise, which made its positioning accuracy not higher, this paper proposed a parameter estimation method based on low intensity wireless network receiving signal spectrum. By sampling approach, first sampling launch signal as multidimensional independent sub-signal and modeling independently, through constructing noise space and sub-single space to obtain TOA estimation accurately based on the orthogonalization of corresponding column vector; then using complex domain mapping, on the basis of obtained TOA estimation, to obtain DOA estimation with contrast way accurately. Finally, it conducted accuracy analysis of the proposed parameter estimation method. Test data showed that: compared with PM algorithm, ESPRIT algorithm, the proposed technique was more accurate on TOA and DOA estimation; and in case of low strength of signal and serious background noise, the proposed method can still be effective to maintain the precision of parameters estimation. The technology can effectively reduce the influence of background noise on the signal transmission, has strong practical deployment significance.
Chongqing Coll Elect Engn, Sch Appl Elect, Chongqing, Peoples R China
推荐引用方式 GB/T 7714
Shao, Youwei. Parameter Estimation of Low Intensity Wireless Network Receiving Signal Spectrum[J].
International Journal of Future Generation Communication and Networking,2016,9(10):38.
APA
Shao, Youwei.(2016).Parameter Estimation of Low Intensity Wireless Network Receiving Signal Spectrum.International Journal of Future Generation Communication and Networking,9(10),38.
MLA
Shao, Youwei."Parameter Estimation of Low Intensity Wireless Network Receiving Signal Spectrum".International Journal of Future Generation Communication and Networking 9.10(2016):38.
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