Inertia-assisting GPS deep-integration semi-physical simulation system

Abstract

The invention discloses an inertia-assisting GPS deep-integration semi-physical simulation system which comprises a GPS receiver, a satellite navigation signal simulator composed of a control mainframe and a radio frequency signal simulator, a ballistic trajectory generator, a strapdown inertia navigation system information simulator composed of an IMU simulator and an inertia navigation computer, a simulation analysis computer and a signal forwarder. The strapdown inertia navigation system information simulator processes the simulation information output by the ballistic trajectory generator to obtain inertia navigation data and transmits the inertia navigation data to the GPS receiver. The ballistic trajectory generator transmits guided missile flight path data to the radio frequency signal simulator. The control mainframe controls the radio frequency signal simulator to generate a satellite navigation simulation signal and sends out the satellite navigation simulation signal through the signal forwarder. The GPS receiver processes the inertia navigation data and the satellite navigation information comprehensively and outputs the final navigation information to the simulation analysis computer. By means of the inertia-assisting GPS deep-integration semi-physical simulation system, the influence of inertia-assisting on the acquisition tracking performance of the GPS receiver is analyzed, and a great significance is provided for research of the deep-integration navigation technology.

Description

technical field [0001] The invention relates to the technical field of integrated navigation, in particular to an inertial-assisted GPS deep-integrated semi-physical simulation system. Background technique [0002] Navigation has always played an important role in the development of human history. The importance of positioning and navigation technology in national defense and military affairs is self-evident. The demand for the comprehensive performance of the navigation system is also increasing, and the research on satellite / inertial integrated navigation technology is constantly deepening. Considering the high dynamics and long-range characteristics of various precision-guided weapons, simple combination methods are no longer enough to meet their requirements for accuracy and stability. Deep combination technology has become a typical symbol of the next-generation navigation system. [0003] In 2000, Donald Gustafson of Draper Lab and others clearly proposed and verified...

AI Technical Summary

Problems solved by technology

[0005] Most of the existing technologies are still in the software simulation stage, and the high dynamic environment built is only a simple uniform linear motion or a great circle trajectory, which is far from the actual ballistic trajectory, and cannot well simulate a vehicle with large acceleration and jerk. However, most of the existing integrated navigation physical systems are high in cost, large in size, and complex in structure, which is not conducive to real-time detection and analysis in research, and the research and development efficiency is low, which hinders the combination Research and Development Progress of Navigation System

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