Propagator method for multiple-parameter estimation of LFM signal for conformal array antenna |
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Authors: | ZHANG Shuyin GUO Ying QI Zisen HUO Wenjun |
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Affiliation: | (1. School of Information and Navigation, Air Force Engineering Univ., Xi'an 710077, China;
2. The First Traning Brigade, Xi'an Flight Academy of Air Force, Xi'an 710300, China) |
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Abstract: | A multiple parameter estimation method for the LFM signal for the conformal array antenna is presented. By employing the energy focusing property of certain-ordered-FRFT to the LFM signal, multiple components blended in received data are separated in the FRFT domain, and hence the simplified data model is acquired, because of which the complicated parameter match is avoided, and then the DOA and polarization estimation is performed by using the PM algorithm. Benefiting from the avoiding of parameter matching and high dimensional eigen-value decomposition, the complexity and computational burden of the algorithm is remarkably controlled. Simulation results show that the proposed algorithm has an approximate performance with a much lower computation burden than ESPRIT. |
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Keywords: | conformal array antenna fractional Fourier transform propagator method polarization estimation linear frequency modulation |
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