Airborne antenna high-precision pointing tracking method based on strapdown flight attitude stability tracking

A technology for stable tracking and pointing tracking, which is applied to antennas, antennas, electrical components and other directions suitable for movable objects, and can solve the problems of low availability, strong dependence, and poor accuracy of single-pulse self-tracking.

Active Publication Date: 2014-03-12
CHINA ELECTRONICS TECH GRP NO 39 RES INST
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AI Technical Summary

Problems solved by technology

[0009] In order to overcome the problems of poor accuracy and strong dependence of program tracking and solve the problem of low availability of monopulse self-tracking, this invention proposes a high-precision pointing tracking method for airborne antennas based on strapdown attitude stable tracking

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  • Airborne antenna high-precision pointing tracking method based on strapdown flight attitude stability tracking

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Embodiment Construction

[0022] Describe the present invention below in conjunction with specific embodiment:

[0023] Refer to attached figure 1 , the airborne antenna high-precision pointing and tracking method based on strapdown attitude stabilization tracking in this embodiment adopts the following steps:

[0024] Step 1: Start the strapdown attitude system. Before the aircraft takes off, the main inertial navigation system of the aircraft will transmit the longitude, latitude and satellite azimuth of the starting point of the aircraft to the strapdown attitude system, and the strapdown attitude system will complete the initial alignment ; The strapdown attitude system includes a three-axis fiber optic gyroscope, a three-axis accelerometer and a computing platform;

[0025] Step 2: After the aircraft takes off, the strapdown attitude system enters the state of inertial navigation. The strapdown attitude system follows and detects the attitude changes and position changes brought about by the move...

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Abstract

The invention provides an airborne antenna high-precision pointing tracking method based on strapdown flight attitude stability tracking. According to the method, firstly, a strapdown flight attitude system completes the initial alignment, secondly, the strapdown flight attitude system enters an inertial navigation state, when satellite tracking signals can be received, the trapdown flight attitude system enters a combined navigation state, and when the satellite tracking signals are interrupted, the strapdown flight attitude system uses an airplane body state just before the satellite tracking signal interruption as the initial state for re-entering the inertia navigation state; the orientation, altitude and polarization angle dial values required by the correct satellite tracking by an airplane airborne antenna are obtained according to the airplane orientation angle, the satellite positioning longitude and the like, further, the airborne antenna is driven to rotate to the corresponding dial value, and the goals of isolating the airplane body movement and aligning the airborne antenna with the satellite can be realized. The airborne antenna high-precision pointing tracking method has the advantages that the problems of poor precision and high dependence of the program tracking are solved, the problem of low availability of the single-pulse self tracking is also solved, and the new research direction is provided for the airborne antenna high-precision pointing tracking.

Description

technical field [0001] The invention relates to the technical field of airborne antenna servo control, in particular to an airborne antenna high-precision pointing and tracking method based on strapdown attitude stable tracking. Background technique [0002] Airborne satellite communication systems are developing rapidly, and more and more aircraft are installed on them. Airborne antennas need to track geosynchronous satellites accurately and quickly. [0003] Usually the method used is a program algorithm (we call it program tracking here). It uses the aircraft inertial navigation system (hereinafter referred to as inertial navigation) / GPS to measure the geographic longitude, latitude, and altitude of the aircraft, and the inertial navigation system gives the aircraft attitude parameters (the aircraft's heading angle relative to the true north direction, the aircraft's roll relative to the horizontal plane) angle, the pitch angle of the aircraft relative to the horizontal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/28H01Q3/08
Inventor 艾文光王双平雒俊鹏张静
Owner CHINA ELECTRONICS TECH GRP NO 39 RES INST
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