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Double sideband frequency diversity array radar system and its target location method

A technology of frequency diversity array and radar system, which is applied in the field of double-sideband frequency diversity array radar system and its target positioning, and can solve the problems that it is not easy to be used in actual scenes, difficult to realize, and frequency diversity array cannot directly extract target distance and angle information, etc. , to achieve the effects of saving transmission power, improving anti-jamming and anti-interception, and improving

Active Publication Date: 2018-10-19
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing frequency diversity array cannot directly extract the distance and angle information of the target, and it is not easy to be used in the actual scene and difficult to realize. To provide a double-sided band frequency diversity array radar system and its target positioning method

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  • Double sideband frequency diversity array radar system and its target location method
  • Double sideband frequency diversity array radar system and its target location method
  • Double sideband frequency diversity array radar system and its target location method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with accompanying drawing:

[0034] Double sideband frequency diversity array radar systems such as figure 1 As shown, it consists of N array elements arranged linearly at equal intervals, where N is a positive integer. The interval between array elements is d, where d is generally 1 / 2 wavelength of the transmitted signal, and each array element includes a transmitting part and a receiving part.

[0035] The transmitting part includes a modulation signal generator, a double sideband modulator, an amplitude normalization adjustment unit and a transmitting antenna; the output end of the modulation signal generator is connected to the input end of the double sideband modulator, and the modulation signal generator is modulated and the output frequency is different The sinusoidal signal x n (t)=cos(2πnΔft), where n=1,2...,N. The double sideband modulator of each array element is mainly composed of a mult...

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Abstract

The invention provides a double side band frequency diversity array radar system and an object positioning method thereof and belongs to the technical field of radar signal processing. The double side band frequency diversity array radar system consists of N array elements that are linearly and uniformly arranged at an interval, N is a positive integer, and each array element comprises an emitting part and a receiving part. The emitting part comprises a modulation signal generator, a double side band modulator and an emitting antenna, wherein an output end of the modulation signal generator is connected with an input end of the double side band modulator, and an output end of the double side band modulator is connected with the emitting antenna. The receiving part comprises a receiving antenna, a filter group and a positioning calculation unit, wherein the filter group consists of two narrow band filters that are different in frequency, the receiving antenna is connected with input ends of the two narrow band filters, and output ends of the two narrow band filters are connected with an input end of the positioning calculation unit.

Description

technical field [0001] The invention relates to the technical field of radar signal processing, in particular to a double-sideband frequency diversity array radar system and a target positioning method thereof. Background technique [0002] Radar target detection technology has a wide range of application requirements in both military and civilian fields. Phased array is widely used in radar target positioning, but because its beam pattern is only related to angle, the target distance information cannot be directly extracted from its beam pattern, and the distance-dependent interference and clutter cannot be effectively suppressed. [0003] The frequency diverse array (FDA) depends on the beam pattern of both distance and angle, making it a research hotspot of domestic and foreign scholars in recent years. However, due to its inherent distance and angle coupling, the distance and angle information cannot be directly extracted from its beam pattern. In addition, the current...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/06G01S7/42
CPCG01S7/42G01S13/06
Inventor 欧阳缮李晶晶谢跃雷晋良念刘庆华蒋俊正廖可非
Owner GUILIN UNIV OF ELECTRONIC TECH
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