GPS/INS组合导航终端的全向位置驱离算法研究

Research on omnidirectional position deportation algorithm of GPS/INS integrated navigation terminal

摘要:

随着微惯性导航系统技术的发展，越来越多的无人平台装备了GPS/INS组合导航终端并具备了一定的抗欺骗能力，但现有的卫星导航欺骗方法难以满足对欺骗目标任意方向的位置驱离需求。为解决这一问题，提出了一种GPS/INS组合导航终端的全向位置驱离算法，可用于对非法无人平台管控的场景。该方法以卫星欺骗信号的设计为突破口，首先分析了卫星导航欺骗对组合导航位置和状态参数的影响，接着将卫星导航欺骗对组合导航状态参数的影响量作为求取欺骗信号的约束条件，进而确定位置驱离所需卫星欺骗信号的欺骗量，接着利用确定的欺骗量建立全向位置驱离模型，最终利用建立的模型生成对应的欺骗信号实现对组合导航终端的全向位置驱离任务。试验验证了本文设计的算法能够实现对组合导航终端360°任意方向的位置驱离。

Abstract:

With the development of micro-inertial navigation system technology, more and more unmanned platforms are equipped with GPS/INS integrated navigation terminal and have certain anti-spoofing capabilities. But the existing satellite navigation spoofing methods are difficult to meet the demand for spoofing targets in any direction. To solve this problem, an omnidirectional position deportation algorithm for GPS/INS integrated navigation terminal was proposed, which could be used in the scene of illegal unmanned platform control. This method takes the design of satellite spoofing signal as the breakthrough point, firstly, the influence of satellite navigation spoofing on the position and state parameters of integrated navigation was analyzed; secondly, the influence of satellite navigation spoofing on the state parameters of integrated navigation was taken as the constraint condition to obtain the spoofing signal; thirdly, the spoofing amount of satellite spoofing signal required for position deportation was determined; fourthly, the omnidirectional position deportation model was established by using the determined spoofing amount; finally, the corresponding spoofing signal was generated by using the established model to realize the omnidirectional position deportation task of integrated navigation terminal. The test verifies that the algorithm designed in this paper can realize the position deportation of the integrated navigation terminal in 360° arbitrary heading.