Navigation Receiver Iteration To Deal With Anti-jamming Technology

Satellite Navigation Systems because of their advanced navigation and positioning technology and superior performance advantages, widely applied in the military sphere and the socio-economic aspects of people's livelihood. Navigation System receivers are vulnerable to various disturbances, and the navigation receiver spreading gain is limited, not very good for a variety of interference to suppress, navigation receiver anti-jamming technology has been a research focus. Navigation receiver directly related to the strength of anti-interference function of the system implementation of satellite navigation. The environment of complex wireless electromagnetic and non-purpose navigation receiver signal interference would bring about adverse effects of the satellite navigation terminal, and in some cases, an anti-jamming technology interference rejection performance is not ideal. Therefore, the study program of assistive technology to improve anti-jamming navigation receiver interference performance becomes necessary. The paper focuses on anti-jamming satellite navigation receiver iterative processing techniques. In the navigation terminal system, the introduction of iterative processing technique with receiver, iterative processing technique enhance the navigation receiver interference rejection performance, high-precision navigation receiver to improve navigation performance. The main work of this paper include the following aspects:Analysis of the Turbo iterative decoding process and the applications of iterative process technology in communication system, have the "Turbo Principle" iterative thinking.Qualitative analysis of some of the common disturbance of function realization of receiver performance,study the effect of existing anti-jamming technology performance, have basis on the iterative processing of anti-jamming technology.Research of the navigation receiver anti-jamming technology have been proposed,I propose an improved program deal with narrowband interference with iterative processing.Establish the iterative processing model of resistance to narrowband interference.Narrowband interference suppression iterative processing program on the frequency domain for narrowband interference suppression jamming detection threshold setting method is improved to improve detection accuracy threshold set to address the threshold set bias leakage caused by issues such as interference rejection, improved interference rejection performance results. Theoretical analysis and simulation show two narrow-band interference suppression iterative processing performance improvement program.I proposed iterative processing techniques to improve multipath mitigation program,completed a navigation receiver iterative processing model of multipath mitigation structure. Iterative processing multipath mitigation technology is based on iterative processing of soft information, ideas multipath signal is estimated to eliminate multipath mitigation for the full suppression, reduce the impact of multipath effects. Multipath mitigation techniques to complete the tracking error curve verification iterated multipath mitigation technology to enhance the ability of anti-multipath receiver.