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Double-station high-frequency ground wave radar multi-target matching method based on angle information

A high-frequency ground wave radar and matching method technology, used in radio wave measurement systems, radio wave reflection/re-radiation, instruments, etc., can solve clutter interference, unstable performance of the radar system itself, and different characteristics problem, to achieve the effect of low complexity, avoid high sidelobes and angle ambiguity problems, improve accuracy and matching success rate

Pending Publication Date: 2022-04-29
HARBIN INST OF TECH
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Problems solved by technology

In the process of multi-target positioning and matching of dual-station high-frequency ground wave radar, the measurements of the same target established on two receiving stations must have certain similar characteristics because of the same physical source. and the instability of the performance of the radar system itself, which lead to the fact that the characteristics established by these measurement data are not exactly the same

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  • Double-station high-frequency ground wave radar multi-target matching method based on angle information
  • Double-station high-frequency ground wave radar multi-target matching method based on angle information
  • Double-station high-frequency ground wave radar multi-target matching method based on angle information

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specific Embodiment approach

[0099] According to the technical scheme of the present invention, refer to Figure 8 , some specific embodiments of the present invention include:

[0100] Step 1: Refer to figure 1 , establish a dual-station high-frequency ground wave radar array signal model, obtain the snapshot data received by each of the two radar arrays, and obtain the cross-correlation matrix of the two radar arrays.

[0101] It can further include:

[0102] (1) Construct a dual-station high-frequency ground wave radar array signal model, which is composed of two uniform radar arrays placed on a common baseline and the baseline parallel to the horizontal plane. The number of array elements contained in each radar array is N, and the array element spacing d=λ / 2, λ is the wavelength of the incident signal, the baseline length between the two radar arrays is 100km, and the position coordinates of the reference elements of the two radar arrays are S 1 (0,0) and S 2 (100km, 0).

[0103] (2) When there ...

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Abstract

The invention discloses a double-station high-frequency ground wave radar multi-target matching method based on angle information, and the method comprises the steps: building a double-station high-frequency ground wave radar array signal model, and obtaining a cross-correlation matrix of two radar arrays; digital beam forming processing is carried out on echo signals of the two radar arrays, and a target signal incident angle is estimated; analyzing the array signal model under the long baseline background to obtain a difference value of two array receiving signals; and multi-target angle matching is realized by using the estimated angle and diagonal elements of the new cross-correlation matrix. The method is easy to implement, low in calculation complexity and high in matching success rate.

Description

technical field [0001] The invention belongs to the field of dual-station high-frequency ground-wave radar multi-target positioning and matching, and relates to a high-frequency ground-wave radar multi-target matching method, in particular to a high-frequency ground-wave radar multi-target angle measurement and Angular pairing method. Background technique [0002] The high-frequency ground wave radar system uses the principle of vertically polarized high-frequency electromagnetic waves along the surface to conduct over-the-horizon detection of ships and aircraft. Countries and regions of all ages. Among them, on the basis of the advantages of high-frequency ground-wave radar, the dual-station high-frequency ground-wave radar also has the characteristics of stronger anti-electronic interference, anti-strike, and good concealment, so it can improve the detection and tracking capabilities of targets, and further enhance the The detection range has aroused people's extensive a...

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Application Information

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IPC IPC(8): G01S13/72G01S13/00G01S7/41G06F17/15G06F17/16
CPCG01S13/726G01S13/003G01S7/41G06F17/15G06F17/16
Inventor 白扬张鑫杨松岩吴小川邓维波
Owner HARBIN INST OF TECH
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