A magnetic heading signal compensation and detection method for an inertial heading attitude system
A technology of attitude system and detection method, applied in the field of navigation, can solve the problems of unstable magnetic heading and unstable magnetic signal, and achieve the effect of improving accuracy
Active Publication Date: 2019-10-18
XIAN FLIGHT SELF CONTROL INST OF AVIC
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Due to the working characteristics of the magnetic heading sensor, it is easily affected by interference signals such as the magnetic environment of the carrier aircraft, the geographical magnetic environment, and the movement of the aircraft, resulting in the instability of the magnetic signal measured by the magnetic heading sensor and the instability of the output magnetic heading.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0044] The invention provides a magnetic heading signal compensation and detection method of an inertial heading attitude system, such as figure 1 , 2 shown, including:
[0045] Step 1: Sample and convert the three-axis magnetic flux component M output by the magnetic sensor 485 bus x , M y , M z ;
[0046] Step 2: Carry out three-axis magnetic flux comprehensive detection on the sampled magnetic flux signal. If the following formula is satisfied, the sampled magnetic flux signal is considered valid and enters step 3; otherwise, the current magnetic heading is invalid and returns to step 1;
[0047]
[0048] Step 3: According to the three-axis magnetic flux component M x , M y , M z Calculate the magnetic sensor output heading ψ with the pitch θ and roll γ signals of the inertial attitude system M0 ;
[0049] Order M HX =cosγ M x +sinγ·M z
[0050] m HY =cosθ·M y +sinγ·sinθ·M x -sinθ·cosγ·M z
[0051] Then ψ M计算 =tg -1 (-M HX / M HY ), Ψ M计算 Value rang...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the field of navigation and relates to a magnetic heading signal compensation and detection method for an inertia heading attitude system. The method comprises steps as follows: step 1, three-axis magnetic flux components Mx, My and Mz output by a magnetic sensor 485 bus are sampled and converted; step 2, comprehensive three-axis magnetic flux detection is performed on sampled magnetic flux signals; step 3, the output heading psiM0 of a magnetic sensor is calculated according to the three-axis magnetic flux components Mx, My and Mz, pitch theta and roll gamma signals of the inertia attitude system; step 4, compass deviation compensation dosage delta is calculated and magnetic heading psiM is corrected according to compass deviation calibration parameters A, B, C, D, E, F and G stored in the inertia attitude system, correction heading delta psi and the output heading psiM0 of the magnetic sensor; step 5, magnetic heading discreteness detection is performed; step 8, carrier angular motion detection is performed.
Description
technical field [0001] The invention belongs to the field of navigation and relates to compensation and completeness detection of magnetic heading signals. Background technique [0002] The magnetic heading sensor is a sensor device that uses the earth's magnetic field to measure the heading. It has a simple structure, light weight, and low cost. It is a commonly used aviation heading measurement device; [0003] Due to the working characteristics of the magnetic heading sensor, it is easily affected by interference signals such as the magnetic environment of the carrier aircraft, the geographical magnetic environment, and the movement of the aircraft, resulting in the instability of the magnetic signal measured by the magnetic heading sensor and the instability of the output magnetic heading. [0004] In the inertial heading attitude reference system, the magnetic heading with the three-axis magnetic flux of the magnetic heading sensor as the source is the basic heading dat...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/06G01C21/08G01C21/16
Inventor 周旭张敏贺凯张向虎武方方马望福
Owner XIAN FLIGHT SELF CONTROL INST OF AVIC