A helicopter gps and gnc navigation system testing equipment

Abstract

The invention belongs to the field of avionics and relates to GPS and GNC navigation system test equipment of a helicopter. The GPS and GNC navigation system test equipment comprises an interface adapter, and an analog machine upper-control circuit, a navigation data circuit, an altimeter coder switching group, a navigation / communication voice-frequency circuit and a power supply module respectively connected with the interface adapter. The power supply module is connected to a singlechip control circuit and the analog machine upper-control circuit. The singlechip control circuit is connected to the altimeter coder switching group and the analog machine upper-control circuit. Ports of the interface adapter comprise a GPS port, a GNC port, a TRACK port, an ALT-CODER port, an NAV-IND port, and a power port. The GPS and GNC navigation system test equipment can realize calibration of multiple XX-type onboard GPS navigation system and GNC communication navigation integrated system products before lading, can completely satisfy accurate digital and analog signal requirements of a GPS / GNC system, and has good application values and high economic benefits.

Description

technical field [0001] The invention belongs to the field of avionics, in particular to a helicopter GPS and GNC navigation system testing equipment. Background technique [0002] Existing civilian GPS (Global Satellite Positioning System) navigation detectors are limited to low-speed airborne, vehicle-mounted or handheld GPS for calibration and measurement, and can only detect low-performance GPS systems such as low tracking speed, low pseudo-code rate, and long capture time , can only be used in the detection category of civil aircraft navigation systems, and cannot meet the functions of the current helicopter GPS and GNC (positioning navigation communication system) such as fast capture, high-speed calculation, and accurate resolution, and it cannot be used for VHF (even VHF) in the GNC system. High Frequency Communication) function and VOR (Very High Frequency Omnidirectional Beacon) navigation function for effective detection. [0003] Existing test equipment for aviat...

AI Technical Summary

Problems solved by technology

[0002] Existing civilian GPS (Global Satellite Positioning System) navigation detectors are limited to low-speed airborne, vehicle-mounted or handheld GPS for calibration and measurement, and can only detect low-performance GPS systems such as low tracking speed, low pseudo-code rate, and long capture time , can only be used in the detection category of civil aircraft navigation systems, and cannot meet the functions of the current helicopter GPS and GNC (positioning navigation communication system) such as fast capture, high-speed calculation, and accurate resolution, and it cannot be used for VHF (even VHF) in the GNC system. High Frequency Communication) function and VOR (Very High Frequency Omnidirectional Beacon) navigation function for effective detection

[0003] Existing test equipment for aviation navigation systems, all use simulated and discrete equipment to test general navigation functions, including radio compass and Volt navigation systems, which do not involve GPS functions, let alone GPS navigation. , VHF communication station and VOR omni-directional beacon navigation functions in one GNC system for performance testing, and the products with untested performance are equipped on the helicopter, which directly affects the satellite positioning, VHF communication and VOR navigation functions of the helicopter, and affects the quality of the helicopter and safety hazards, resulting in unpredictable injuries and losses

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