| 摘要: |
| 针对战术数据链在复杂电磁环境下性能受限的问题，提出基于非标准构型阵列天线的战术数据链空时联合抗干扰技术。该技术在常规导向矢量获取方法失效时，通过设计引导信号，结合盲自适应抗干扰算法进行干扰信号的抑制和引导信号的重构，实现对干扰方向调零抑制并保持通信信号的正常接收。仿真结果表明，通信信号经过空时联合抗干扰处理后，在干扰方向形成的零陷超过-30 dB，大大抑制了干扰方向的信号，保存了信号方向的信号。 |
| 关键词: 战术数据链 空时自适应抗干扰 引导信号 |
| DOI：10.20079/j.issn.1001-893x.210711001 |
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| 基金项目:四川省科技厅高新技术领域重点研发项目（2021YFG0155）；中国西南电子技术研究所技术创新基金资助项目（H21004.2） |
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| Space-time adaptive anti-jamming technique for tactical data link |
| KANG Ronglei,AN Yi,BAN Yalong,YANG Shaoshuai |
| (Southwest China Institute of Electronic Technology,Chengdu 610036，China) |
| Abstract: |
| For the problem that the performance of tactical data link decreases in the complex electromagnetic environment,a space-time adaptive anti-jamming method is proposed for ultra-short wave data link with non-regular array antenna.It is difficult to obtain a precise steering vector of non-regular array antenna.To solve the problem,a guiding signal is developed at transmitter,the jamming signal is suppressed by blind adaptive algorithm and a guiding signal is reconstructed at receiver.Then,the communication performance is improved under the jamming environment by space-time adaptive processing.The simulation results show that the jamming signal is suppressed by the beam null and the null depth exceeds -30 dB at the direction of the jamming signal,and the communication signal is obtained at the direction of the signal. |
| Key words: tactical data link space-time adaptive anti-jamming guiding signal |
