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Direction finding method and apparatus of multiple-transmitting single-receiving passive radar

A passive radar, multi-transmit and single-receive technology, applied in the field of radar, can solve the problems of low accuracy, vulnerable to security threats, etc.

Inactive Publication Date: 2017-01-25
ZHOUKOU NORMAL UNIV
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  • Description
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Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for direction finding of a multi-transmission and single-reception passive radar, which is used to solve the problems of relatively low accuracy and security threats in the existing random test target direction finding technology

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  • Direction finding method and apparatus of multiple-transmitting single-receiving passive radar
  • Direction finding method and apparatus of multiple-transmitting single-receiving passive radar

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Embodiment Construction

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0064] figure 1 It exemplarily shows a flow chart of a method for direction finding of a multi-send-single-receive passive radar provided by an embodiment of the present invention; the method can be applied in radar positioning technology.

[0065] Such as figure 1 As shown, a method for direction finding of a multi-send-single-receive passive radar provided in an embodiment of the present invention mainly includes the following steps:

[0066] Step 101, set...

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Abstract

The invention provides a direction finding method and apparatus of multiple-transmitting single-receiving passive radar, belongs to the technical field of radar, and is intended to solve the problem that prior direction finding art has low precision and has safety under threat. The method comprises: setting a random test target, a receiver and at least two transmitters in a two-dimensional plane, enabling the receiver to make uniform circulation motion around a set origin, setting a direction of a line of a 0 moment origin and the receiver as a positive direction, determining slant range history of observation channel i according to positional coordinates of the transmitters, a distance between the receive and the origin, an included angle with the positive direction and an included angle of the receiver with the positive direction, and determining a direction finding model of the observation channel i through formula (1) according to signal frequency transmitted by the transmitter i, scattering intensity of the random test target, signal wavelength, and the slant range history; normalizing the direction finding model through formula (2), and determining direction finding models of at least two observation channels through formula (3).

Description

technical field [0001] The invention belongs to the field of radar technology, and in particular relates to a direction finding method and device for a multi-send-single-receive passive radar. Background technique [0002] Random test target direction finding is mainly used in the field of military reconnaissance. At present, the direction finding of random test targets generally uses real aperture radar or array radar for direction finding. These two direction finding methods both use the active illumination mode, and their angular resolution is inversely proportional to the antenna aperture. In order to improve the direction finding accuracy, it is generally necessary to increase the antenna aperture or increase the array length, which greatly increases the system cost. Due to the active illumination mode, the radar system is extremely vulnerable to enemy fire in modern warfare, and the security of the system is greatly threatened. [0003] To sum up, the existing random...

Claims

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Application Information

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IPC IPC(8): G01S13/48
CPCG01S13/48
Inventor 刘玉春
Owner ZHOUKOU NORMAL UNIV
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