Dual-mode bionic polarization/geomagnetic-aided integrated navigation system

Abstract

The invention provides a dual-mode bionic polarization / geomagnetic-aided integrated navigation system. The system includes a navigation mode switching unit, a sensor module, an interface circuit, a microprocessor, a memory module and a power supply module. The sensor module comprises a polarization sensor, a satellite navigation module, a geomagnetic sensor, an inertial navigation system and an ultrasonic range finder. The interface circuit comprises a data transmission interface and a command output interface. After starting working, the system selects a navigation mode at first; then the sensor module begins measuring; the interface circuit transmits obtained data to the microprocessor for navigation calculation; navigation information is stored and output; and the microprocessor sends a control command according to the navigation information and a remote control signal. According to the invention, bionic polarization navigation and geomagnetic navigation are combined together and used as an auxiliary means for inertial navigation, thereby realizing dual navigation modes, i.e., a high-accuracy satellite navigation mode under the condition of normal satellite signals and an autonomous satellite-free navigation mode under the condition of interfered satellite signals.

Description

technical field [0001] The invention relates to a dual-mode bionic polarization / geomagnetism-assisted combined navigation system, which can output the speed, position and attitude navigation information of the carrier in real time, and can issue control instructions to the carrier according to the navigation information and remote control signals. In addition, the present invention can judge whether the satellite signal is interfered by detecting the output frequency and output value of the interrupt signal of the satellite navigation module, and switch between two navigation modes. Mode 1: high-precision satellite navigation mode under normal conditions ; Mode 2: fully autonomous mode without satellite navigation when satellite signals are interfered. Background technique [0002] At present, the commonly used navigation methods in the field of aerospace mainly include inertial navigation, satellite navigation, astronomical navigation and geomagnetic navigation, each of whi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem of the present invention is to overcome the shortcomings of single navigation system such as low precision and poor anti-interference ability, make up for the shortcomings of conventional integrated navigation systems that mostly rely on satellite navigation and not strong autonomy, and provide a dual-mode bionic polarization / geomagnetism-assisted combination The navigation system provides high-precision position information in the satellite navigation mode, and enters the fully autonomous non-satellite navigation mode when the satellite signal is interfered. At this time, it has geomagnetic navigation, polarized light navigation, strong autonomy, and high navigation accuracy. features, and overcome the shortcomings of low reliability when the two are used as a single auxiliary navigation means

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