GPS接收机空域和空时滤波性能研究

提出了空域滤波和空时滤波的优缺点,研究了他们的抗干扰性能,并在圆阵中进行了仿真.仿真结果表明这两种方法都可以用于GPS接收机抗干扰.其中,空时滤波结构相对于空域滤波能增加系统的自由度,对于宽带信号能提供更佳的抗干扰性能;价格相对较低的空域滤波结构在普通干扰环境中(干扰数目较少)也是一种合适的选择.

Study on Performance of Space and Space - time Filtering for GPS Receiver

The merits and disadvantages of space filtering and space -time filtering is put forward. In computer simulation, it is adopted in circular array to study their anti - jamming performance. The simulation result indicates that this two methods can be used for GPS receiver to achieve anti -jamming. Compared with space filtering, the structure of space -time filtering increases the freedoms of degree and gives a better anti- jamming capability for broadband signals. However, the structure of space filtering is a better choice in advantage of its relative lower price in the simple anti- jamming environment.