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Digital tuning method, system and device for radar receiver front-end

A receiving front-end and radar technology, applied in the field of radar communication, can solve the problems of slow lock-in time, limited lock-in range, long integration time, etc., and achieve the effects of fast response speed, improved target recognition rate, and strong anti-interference ability.

Active Publication Date: 2017-05-17
上海圆舟电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a digital tuning method, system and equipment for the radar receiving front end, which is used to solve the problem of using the analog method to tune the voltage in the prior art to eliminate the influence of the pulse, so that the integral The time is long to produce the phenomenon of slow "lock-in" time and easy "lock-off", and the lock-in range is limited

Method used

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  • Digital tuning method, system and device for radar receiver front-end
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  • Digital tuning method, system and device for radar receiver front-end

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Embodiment 1

[0056] This embodiment provides a digital tuning method for a radar receiving front end. The digital tuning method for a radar receiving front end includes the following steps:

[0057] Transmit a pulse signal; the pulse signal includes a first pulse signal;

[0058] Converting the first pulse signal into an intermediate frequency pulse signal;

[0059] Preprocessing the intermediate frequency pulse signal;

[0060] The frequency value of the preprocessed intermediate frequency pulse signal is adjusted in a predetermined tuning manner to obtain a tuning control signal that conforms to the electrical characteristics of the radar receiving front end.

[0061] The digital tuning method of the radar receiving front end described in this embodiment will be described below in conjunction with the figure. For the digital tuning method of the radar receiving front end described in this embodiment, please refer to figure 1 , Is shown as a schematic flow diagram of a digital tuning method for a ...

Embodiment 2

[0110] This embodiment provides a digital tuning system for a radar receiving front end. The digital tuning system for a radar receiving front end includes:

[0111] A transmitting module for transmitting a pulse signal; the pulse signal includes a first pulse signal;

[0112] A conversion module, connected to the transmitting module, and used for converting the first pulse signal into an intermediate frequency pulse signal;

[0113] A preprocessing module, connected to the conversion module, for preprocessing the intermediate frequency pulse signal;

[0114] The tuning module is connected to the preprocessing module and is used to adjust the frequency offset of the preprocessed intermediate frequency pulse signal in a predetermined tuning manner to obtain a tuning control signal that meets the electrical characteristics of the radar receiving front end.

[0115] The digital tuning system of the radar receiving front end described in this embodiment will be described in detail below in ...

Embodiment 3

[0164] This embodiment provides a digital tuning device of a radar receiving front end, the digital tuning device of the radar receiving front end includes:

[0165] The transceiver antenna is used to transmit a pulse signal; the pulse signal includes a first pulse signal;

[0166] A radar receiving front end for converting the first pulse signal into an intermediate frequency pulse signal;

[0167] Filter and analog-to-digital converter for preprocessing the intermediate frequency pulse signal;

[0168] The tuner is used to adjust the frequency offset of the preprocessed intermediate frequency pulse signal in a predetermined tuning manner to obtain a tuning control signal that meets the electrical characteristics of the radar receiving front end.

[0169] The digital tuning device of the radar receiving front end described in this embodiment will be described in detail below in conjunction with the figure. This embodiment provides a digital tuning device 2 of the radar receiving front...

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Abstract

The invention provides a digital tuning method for a radar receiver front-end, comprising the following steps: emitting pulse signals, wherein the pulse signals include a first pulse signal; converting the first pulse signal into a medium-frequency pulse signal; preprocessing the medium-frequency pulse signal; and adjusting the frequency offset of the frequency value of the preprocessed medium-frequency pulse signal in a predetermined tuning mode to acquire a tuning control signal in accordance with the electrical characteristics of the radar receiver front-end. According to the digital tuning method, a digital tuning system and a digital tuning device for a radar receiver front-end provided by the invention, the digital tuning method has advantages such as strong anti-jamming capability, quick closed-loop control response and high tuning precision compared with an analog tuning method, a radar receiver front-end can output an ideal medium-frequency signal stably, the echo image is clear and full, the target and the clutter are distinct, and the target identification rate is improved effectively.

Description

Technical field [0001] The invention belongs to the technical field of radar communication, and relates to a tuning method, system and equipment, and in particular to a digital tuning method, system and equipment of a radar receiving front end. Background technique [0002] At present, most of the civilian marine radars are pulse radars based on magnetrons. The radar transmits short-time X-band (9410MHz) or S-band (3050MHz) microwave signals, and generally uses a low-noise receiving front end to detect the received signals. The microwave signal is down-converted, converted to an easy-to-process intermediate frequency signal (60MHz), and then amplified and detected, and finally sent to the display for display. [0003] In order to suppress additional noise, and limited by the bandwidth of the amplifier, the processing bandwidth of the intermediate frequency signal is very limited. On the other hand, the microwave output of the magnetron is not very stable, and will show a large fre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/285
CPCG01S7/285
Inventor 褚人乾
Owner 上海圆舟电子科技有限公司
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