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Target remote positioning system

A long-range positioning and target technology, applied in the field of radar signal processing, can solve the problems that are difficult to achieve, difficult to use in actual scenarios, and the frequency diversity array cannot directly extract target distance and angle information, so as to improve anti-interference and anti-interception, and save money. Transmit power, the effect of increased capacity

Inactive Publication Date: 2017-06-23
李维波
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  • Claims
  • Application Information

AI Technical Summary

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. A kind of target remote positioning system is provided

Method used

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  • Target remote positioning system
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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing:

[0023] A target remote location system, 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.

[0024] 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 multiplier; one input of th...

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Abstract

The present invention provides a target remote positioning system, which belongs to the technical field of radar signal processing, wherein the target remote positioning system is composed of N array elements arranged linearly at equal intervals, wherein N is a positive integer; each array element includes a transmitter part and receiving part. The transmitting part includes a modulated signal generator, a double sideband modulator and a transmitting antenna; the output end of the modulated signal generator is connected with the input end of the double sideband modulator, and the output end of the double sideband modulator is connected with the transmitting antenna. The receiving part includes a receiving antenna, a filter bank and a positioning calculation unit; the filter bank is composed of two narrow-band filters with different passing frequencies; the receiving antenna is connected to the input ends of the two narrow-band filters at the same time, and the two narrow-band filters The output end is simultaneously connected with the input end of the positioning solving unit.

Description

technical field [0001] The invention relates to the technical field of radar signal processing, in particular to a target remote positioning system. 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 frequency diversity array radar target detection is mainly th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/28
CPCG01S7/28
Inventor 李维波
Owner 李维波
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