Strapdown intertial/celestial combined navigation semi-material emulation system

Abstract

The invention relates to strapping inertia / astronomical combination navigation semi-physical simulation system. It includes strapping inertia subsystem, astronomical subsystem, combination navigation terminal, trace generating terminal, demo verification and evaluation terminal. The trace generation terminal is used to form nominal trace data which introduces into astronomical subsystem and combination navigation terminal as information processing reference source. The astronomical subsystem is made up of ARM +liquid crystal light valve star map simulator and CMOS sensor +DSP star sensor. The combination navigation terminal is realized by DSP and used to receive the output data. The control terminal is used to realize demo verification and evaluation. The invention can effectively reduce experimentation cost and lead time. Thus, it has great theory and practice meanings for the combination navigation system dynamic performance study and engineering application.

Description

technical field [0001] The invention relates to a combined navigation semi-physical simulation system, which is suitable for the research of the theoretical method and engineering application technology of the strapdown inertial / astronomical combined navigation system, and the performance verification of the combined navigation system. Background technique [0002] Entering the 21st century, with the rapid development of information technology, aerospace technology is gradually moving towards intelligence, efficiency and invisibility. High-precision navigation technology, as one of the core technologies to achieve long-range precision strikes, is the main technical bottleneck that must be overcome in the development of high-precision navigation systems and the provision of high-precision motion status information for modern flight carriers. At present, the high-precision navigation of long-range and long-endurance flight carriers cannot be realized independently by any navig...

AI Technical Summary

Problems solved by technology

The patent application number is 200610011580.X, which proposes a SINS / CNS / GPS integrated navigation semi-physical simulation system, but there are two problems: (1) GPS is not owned by our country, it is unreliable at ordinary times, and it is dangerous in wartime; (2) ) Among them, the SINS / CNS integrated navigation hardware-in-the-loop simulation system simply connects the SINS and CNS systems realized by the computer through the serial port, which not only has large volume, low precision, poor real-time performance, but also poor time synchronization.

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