Narrow-band Interference Suppression in GPS Using Frequency-domain Method
Global Positioning System (GPS) computes its position, velocity and other information by processing navigation signals from a constellation of GPS satellites. These signals arrive at the receiver at a very low-power level,typically 30 dB below the receivers thermal noise level. As a result, strong narrow-band interference (NBI) will make great interference to the capability of receiver. In spreadspectrum communication, its ability of spread-spectrum gain can provide a certain anti-interference ability. But when it meet with the strong narrow-band interference environment, it needs to ask the signal processing technique for help to enhance the narrow-band interference suppression (NBIS) ability under the situation that needn t increase the signal bandwidth. Currently NBIS technique(NBIST) mainly includes the time-domain and frequency-domain processing technique. Opposite in the time-domain processing technique but talk, frequency-domain processing technique have advantage of stabilization, quick constringency and repress change interference effectively. So it is applied extensively in engineering practice. This paper presents a technique called overlap-add to suppress the NBI and a series of experiments were carried out on it.
GPS Windowing FFT Overlap-add Nonlinear-NBI-suppression
Zhang Xinbo Zhang Yang Liu Tian Tan Haiyun
Research Institute of Electronic Science and Technology University of Electronic Science and Technol College of Electrical Engineering of UESTC Chengdu,610054,China Research Institute of Electronic Science and Technology University of Electronic Science and Technol
国际会议
The 11th International Space Conference of Pacific-basin Societies(第11届环太平洋国际航天会议)
北京
英文
136-140
2007-05-16（万方平台首次上网日期，不代表论文的发表时间）