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Alpha-beta filter method based on depolarization coordinate transformation

A technology of coordinate transformation and filter gain, which is applied in the field of α-β target tracking based on debiased coordinate transformation, which can solve the problems of poor real-time tracking effect, large amount of calculation, and complex Kalman filter method for debiased coordinate transformation.

Inactive Publication Date: 2015-08-19
SHANGHAI QIANLONG INFORMATION TECH CO LTD
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  • Application Information

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Problems solved by technology

However, the Kalman filter method for debiasing coordinate transformation is complicated, the calculation is too large, and the real-time tracking effect is not good.

Method used

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  • Alpha-beta filter method based on depolarization coordinate transformation
  • Alpha-beta filter method based on depolarization coordinate transformation
  • Alpha-beta filter method based on depolarization coordinate transformation

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Embodiment Construction

[0068] In order to make the above features and advantages of the present invention more obvious and understandable, the following combination figure 1 The present invention will be further described in detail with specific embodiments.

[0069] Firstly, the relevant parameters related to this scheme will be introduced and described in detail as follows:

[0070] x, y, and z are the position components on the X, Y, and Z axes, respectively;

[0071] r, β, and θ represent the distance, pitch angle, and azimuth angle from the target to the origin of the coordinates, respectively, when the measured value of the target is in polar coordinates;

[0072] r m , β m , θ m are the measured values ​​(distance, pitch angle and azimuth angle) obtained by the observation platform in the polar coordinate system;

[0073] is the measurement distance error between the true value and the measured value in the polar coordinate system;

[0074] Measure the pitch angle error between the ...

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Abstract

The invention discloses an alpha-beta filter method based on depolarization coordinate transformation, which is an improvement on a depolarization coordinate transformation Kalman filter method. The alpha-beta filter method of the invention is adopted to replace the Kalman filter method in the depolarization coordinate transformation Kalman filter method, filter gain calculation is reduced, complexity of the entire filter method is simplified, and the real-time target tracking efficiency is improved. The method can be applied to real-time tracking on the target movement trend.

Description

technical field [0001] The invention relates to the fields of wireless sensor network and space multi-target tracking, in particular to an α-β target tracking method based on debiased coordinate conversion. Background technique [0002] With the development of the information age and the continuous innovation and improvement of aerospace technology, the strategic position of space in the political, economic, military and other fields of various countries is increasing day by day. In modern military struggles, space information has become the core combat capability, and it is very important to master space information. In order to better grasp space information, and with the development of satellite technology and radar technology, a new type of space-based radar has been developed to detect and track space targets. In order to more accurately identify and track space target information, in tracking radar The target tracking method must be introduced to update the status inf...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S13/66
CPCG01S7/02G01S13/66
Inventor 廖勇何娟陈欢周昕李瑜峰
Owner SHANGHAI QIANLONG INFORMATION TECH CO LTD