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- Title
QAM-OFDM 雷达通信共享信号长时间相参积累算法.
- Authors
杨勇军; 梅进杰; 胡登鹏; 雷云龙
- Abstract
Because quadrature amplitude modulation(QAM) -orthogonal frequency division multiplexing (OFDM) radar communication integrated sharing signal carries random communication information,its pulse compression sidelobe is more random,similar to the effect of noise. To solve this problem,a long-time coherent integration algorithm based on Keystone transform is used to suppress the sidelobe. Based on the sharing signal model,the influence of random communication information on the pulse compression sidelobe is analyzed,and the feasibility of suppressing the sidelobe by long-time coherent accumulation is analyzed. Then the Keystone transform is used to correct the moving of the distance unit generated by the long-time coherent accumulation,and the Doppler fuzzy compensation processing is carried out. The theoretical analy sis and simulation results show that this method can effectively suppress the pulse compression sidelobe of sharing signal by concentrating the echo energy accumulation.
- Publication
Telecommunication Engineering, 2019, Vol 59, Issue 7, p769
- ISSN
1001-893X
- Publication type
Academic Journal
- DOI
10.3969/j.issn.1001-893x.2019.07.004