摘要
卫星导航接收机接收到的卫星信号十分微弱,同时面临着复杂电磁环境的干扰,因而抗干扰问题成为研究的热点。目前有很多种抗干扰技术及算法仅局限于理论研究和数字仿真,无法在实际干扰环境下测试抗干扰接收机的抗干扰性能。本文在研究波束形成天线抗干扰算法的基础上,基于微波暗室环境下建立抗干扰接收机的半物理仿真环境,实现卫星信号多天线输出、复杂干扰环境的模拟,对四波束、八波束天线抗干扰接收机进行了仿真测试,结果表明波束形成天线抗干扰接收机在输入干信比相同的情况下,波束数目越多抗干扰接收机性能越好。
The signal of satellite navigation system is very weak, while facing interference from complex electromagnetic environment, so anti-jamming problem becomes the focus of research. Currently there are many kinds of anti-jamming technologies and algorithms, which are limited in the field of theoretical study and digital simulation and can’t be tested the anti-jamming performance under the actual interference environment. In the paper the anti-jamming algorithms of beam-forming antenna is analyzed, Semi-physical simulation environment of anti-jamming receiver is established based on microwave chamber, and the simulation of satellite constellations and interference are achieved. Four beams forming and eight beams forming antenna anti-jamming receivers are tested, when INR is the same while the number of beam is different, the more beam-forming is, the better anti-jamming performance of anti-jamming receiver.
出处
《电子设计工程》
2013年第10期69-72,共4页
Electronic Design Engineering
