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A radar range tracking method based on α-β and lms joint filtering

A distance tracking and joint filtering technology, applied in the reflection/re-radiation of radio waves, radio wave measurement systems, instruments, etc., can solve the problems of many modules, large amount of calculation, small amount of calculation, etc. The effect of calculation efficiency and moderate calculation amount

Active Publication Date: 2022-02-25
BEIJING INST OF REMOTE SENSING EQUIP
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Problems solved by technology

In this system, the α-β filter is simple to implement and has the least amount of calculation, but it is not an optimal filter; although the Kalman filter has the best filtering effect, it involves a large number of matrix operations and has the largest amount of calculation.
Moreover, there are many modules and low integration, so it is impossible to take into account both computational efficiency and filtering accuracy

Method used

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Embodiment Construction

[0032] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, therefore, the present invention is not limited to the specific embodiments disclosed below limit.

[0033] The invention is a radar distance tracking method based on α-β and LMS combined filtering. Obtain and store the current radar measurement information through the radar measurement information acquisition module, estimate the radial velocity of the target through the LMS velocity filter module and control the wave gate recursion in two consecutive radar processing cycles, and use the α-β distance filter module in the radar measurement When the data is updated, the predicted value of the target distance is corrected and the recursion of the wave gate is controlled.

[0034] The concrete steps of an embodiment of the present invention are:

[0035] T...

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Abstract

The invention discloses a radar distance tracking system based on α-β and LMS combined filtering, which includes a radar measurement information acquisition module, an LMS speed filter module and an α-β distance filter module, wherein the radar measurement information acquisition module is an LMS speed filter The module and the α-β distance filter module provide information data support, and the LMS speed filter module and the α-β distance filter module process the information data. The present invention can take into account both calculation efficiency and filtering precision by separately filtering the distance and the speed, and is especially suitable for the application of the high-speed mobile radar platform. The invention also relates to a radar distance tracking method based on α-β and LMS joint filtering.

Description

technical field [0001] The invention relates to a radar distance tracking method, in particular to a radar distance tracking method based on α-β and LMS combined filtering. Background technique [0002] With the rapid development of digital signal processing technology, coherent radar system is commonly used in modern radars, and the coherent accumulation is realized by performing fast Fourier transform (FFT) on multiple continuous echoes in the distance dimension to improve the radar signal-to-noise ratio. The core of coherent accumulation is distance alignment. Through the current target distance and target radial velocity, the target distance at the next radar pulse time is estimated, and the center position of the receiving wave gate is controlled, that is, the wave gate is recursive, so that within the coherent processing period from The relative position of the echo of the same scattering center of the target and the center of the receiving wave gate remains unchanged ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/70G01S7/41
CPCG01S13/70G01S7/414
Inventor 向巍崔剑熊斌
Owner BEIJING INST OF REMOTE SENSING EQUIP
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