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| Joint Estimation Algorithm of Direction of Arrival and Polarization for Multiple Frequency-hopping Signals |
| Zhang Dong-wei① Guo Ying①② Qi Zi-sen① Hou Wen-lin① Zhang Bo① Li Jiao① |
①(Institute of Information and Navigation, Air Force Engineering University, Xi’an 710077, China)
②(Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory, Shijiazhuang 050081, China) |
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Abstract In this paper, with the purpose of sorting frequency-hopping networks, identifying and tracking signals, a joint estimation of Direction Of Arrival (DOA) and polarization for multiple frequency-hopping signals is carried out in underdetermined condition, which is based on the spatial polarization time-frequency analysis and implemented by constructing polarization sensitive array with orthogonal dipole elements. Firstly, the observation model for polarization sensitive array of frequency-hopping signals is built. Then the spatial polarimetric time-frequency distribution matrix for every hop signal is generated in the knowledge of reference sensor time-frequency analysis. From this matrix, the polarization and spatial characteristic information can be extracted, which used for the joint estimation of DOA and polarization in linear, quadratic spatial polarization time-frequency analysis and polynomial rooting methods respectively. Finally, the Monte-Carlo simulation results show the effectiveness of the proposed algorithm.
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Received: 15 October 2014
Published: 02 June 2015
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Corresponding Authors:
Zhang Dong-wei
E-mail: zdw_dsp616@163.com
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