A navigation management method for a flight management system
A technology of flight management system and management method, which is applied in navigation, navigation through speed/acceleration measurement, surveying and navigation, etc., can solve the problem that the flight management system is in the initial stage, and achieve the effect of reliable aircraft position information
Active Publication Date: 2021-04-20
XIAN FLIGHT SELF CONTROL INST OF AVIC
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Problems solved by technology
At present, the core technology of the flight management system is monopolized by foreign companies, and domestic research on the flight management system is still in its early stages
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[0019] The technical solution will be described in further detail below.
[0020] The navigation management method of the flight management system includes the following three steps:
[0021] Step 1, navigation mode selection
[0022] The optimal navigation mode is selected based on the available sensors and their capabilities. The FMS navigation function selects the navigation mode according to the following priorities:
[0023] ●GPS
[0024] ●Radio navigation (DME / DME, DME / VOR)
[0025] ●Inertial navigation
[0026] ●DR
[0027] When the higher-priority navigation mode is unavailable or does not meet the requirements of the current flight stage, the suboptimal navigation mode that meets the requirements of the current flight stage is selected according to the above priorities.
[0028] GPS is the highest priority navigation mode. When the GPS integrity value HIL is less than the error limit of the current flight phase, the FMS selects the GPS navigation mode. The mar...
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The invention belongs to flight management technology, and in particular relates to a navigation management method of a flight management system. The method includes: when the navigation mode is GPS, using the GPS positioning result to update the FMS position; when the navigation mode is DME / DME, using the DME / DME positioning result to update the FMS position; when the navigation mode is VOR / DME, using VOR / DME positioning results update the FMS position; when the navigation mode is inertial navigation mode, use the deviation between the FMS position and the inertial position calculated last in GPS, DME / DME or VOR / DME navigation mode before switching to correct the inertial position, The corrected inertial position is the determined FMS position; when in DR navigation mode, calculate and update the FMS position according to the last determined aircraft position before switching, the last determined wind speed, and the input heading and true air speed; calculate each The error between the sensor positioning result and the FMS position, and alarm according to the preset threshold. A navigation management method capable of automatically selecting a navigation mode based on available sensors and providing accurate and reliable aircraft position information is provided.
Description
technical field [0001] The invention belongs to flight management technology, and in particular relates to a navigation management method of a flight management system. Background technique [0002] The flight management system is an important part of the avionics system. The system integrates navigation, guidance, flight planning, trajectory prediction, control display, performance management, fuel management, etc., to realize the automatic management and control of the entire flight process of the aircraft. At present, the core technology of flight management system is monopolized by foreign companies, and domestic research on flight management system is still in the initial stage. [0003] The flight management system is connected with many navigation sensors, including INS, GPS, DME, VOR, ADS, AHRS, etc. How to make reasonable use of various sensor information to provide the most accurate and reliable aircraft position information is a challenge faced by the development ...
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IPC IPC(8): G01C21/16G01C21/20G01S19/49
CPCG01C21/165G01C21/20G01S19/49
Inventor 田婉婷屈重君朱成阵祁鸣东
Owner XIAN FLIGHT SELF CONTROL INST OF AVIC