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Adaptive-filtering target tracking and positioning method based on embedded platform

A technology of adaptive filtering and target tracking, which is applied in the field of tracking and positioning, can solve the problems of high computational complexity, and achieve the effects of improving observation accuracy, ensuring stability, high stability and performance

Inactive Publication Date: 2012-06-27
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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  • Claims
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AI Technical Summary

Problems solved by technology

At present, the research and application of domestic adaptive filter target tracking and positioning technology in the field of ADS-B (Automatic Dependent Surveillance-Broadcast) is still in the initial stage, while the research and application of foreign related fields are mainly concentrated on the core algorithm based on Kalman filter In fact, although it can achieve better convergence characteristics and smaller residual variance, the computational complexity is high, and a large number of matrix operations are required in the algorithm implementation process (even if the general approximation algorithm in the industry is used, the algorithm complexity is also very high. Considerable), which undoubtedly brings great challenges to real-time performance, cost and power consumption

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  • Adaptive-filtering target tracking and positioning method based on embedded platform

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Embodiment Construction

[0017] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0018] Such as figure 1 As shown, the present invention is based on the embedded platform adaptive filtering target tracking and positioning method comprising the following steps:

[0019] Step 1: Use the input interface module to obtain the current geographic location observation data of the target aircraft through the data bus of the ARM embedded platform. The geographic location observation data is in a fixed-point format. First, convert the geographic location observation data into a floating-point format. If the information source is the observation data obtained in the earth-centered polar coordinate system, it is first transformed into the earth-centered rectangular coordinate system by vector operation. In order to meet the needs of practical applications, two versions based on ...

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Abstract

The invention discloses an adaptive-filtering target tracking and positioning method based on an embedded platform, comprising the following steps: (1) obtaining observation data of geographical position of a target aircraft at preset time by the data bus of the Advanced RISC Machine (ARM) embedded platform; (2) performing modeling according to the observation data of geographical position in three-order Lagrange's series in the three-dimensional space motion by a motion modeling module; (3) performing residual data processing for the error value output by the motion modeling module by an information extracting module; (4) performing parameter optimizing for the gain matrix according to the evaluated key parameter of the noise space obtained by the information extracting module; (5) obtaining the filtering data at preset time by an iterative filtering module; and (6) performing coordinate system of the filtering data and outputting the data by an output interface module. The adaptive-filtering target tracking and positioning method of the invention achieves high-stability and performance optimization when keeping low computation complex degree and less resource occupation of a core processor.

Description

technical field [0001] The invention relates to a tracking and positioning method, in particular to an adaptive filtering target tracking and positioning method based on an embedded platform. Background technique [0002] In the air traffic control system, ADS-B (Automatic Dependent Surveillance-Broadcast) is an important part of the air-air data link and air-ground data link, and it is also an important means to reflect the air traffic situation and ensure flight safety. With the country's great investment in the aviation industry, the development of various technologies in the field of ADS-B (Automatic Dependent Surveillance-Broadcast) with independent intellectual property rights has become an important task for all relevant research institutions in China at present and in the next few years. In this field, the adaptive filtering target tracking and positioning technology is the key. The rational use of this technology helps to filter out the observation noise in the geog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 方正仇启明李裕朱丽军王洋徐丁海
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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