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One-transmitting double-receiving continuous wave radar front end

A one-transmit, two-receive, wave radar technology, applied in the front-end field of continuous wave radar, can solve the problems of low measurement accuracy and inability to measure the target azimuth, and achieve the effect of good directionality and improved measurement accuracy and accuracy.

Pending Publication Date: 2021-07-23
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a continuous wave radar front end with one transmission and two receptions, and solve the problems of low measurement accuracy and inability to measure target azimuth of the existing single transmission and single reception radar system

Method used

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  • One-transmitting double-receiving continuous wave radar front end
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  • One-transmitting double-receiving continuous wave radar front end

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the scheme of the present invention

[0022] like figure 1 As shown, the continuous wave radar front end with one transmission and two receptions includes a frequency synthesis module, a transmitter module, a receiver module, a transmission antenna and a reception antenna; the frequency synthesis module is used to generate the local oscillator signal and the linear continuous wave signal; the transmitter module is used to multiply the frequency of the linear continuous wave signal generated by the frequency synthesis module, and then up-convert the frequency-multiplied signal and the local oscillator signal, and the up-converted signal is divided into Three channels, one channel is transmitted by the transmitting antenna after power amplification, and the other two channels are used as local oscillator signals of the receiver; the transmitting antenna is used to transmit the proce...

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Abstract

The invention discloses a one-transmitting double-receiving continuous wave radar front end, which comprises a frequency synthesis module, a transmitter module, a receiver module, a transmitting antenna and a receiving antenna, and is characterized in that the frequency synthesis module generates a local oscillator signal and a linear continuous wave signal required by a transmitter; the transmitter module performs frequency multiplication on a linear continuous wave signal, then performs up-conversion on the signal subjected to frequency multiplication and a local oscillator signal, the signal subjected to up-conversion is divided into three paths by a power divider, one path is transmitted by a transmitting antenna after power amplification, and the other two paths are used as local oscillator signals of a receiver; and the receiver module performs down-conversion on the signal received by the receiving antenna and the local oscillator signal and outputs an intermediate-frequency signal, and the intermediate-frequency signal is filtered and amplified and then output to a signal processor to extract radar target information. The problems that an existing single-transmitting single-receiving radar front end is low in measurement precision and cannot measure the target orientation are solved.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a continuous wave radar front end with one transmission and two receptions. Background technique [0002] Radar is a system that transmits electromagnetic energy to a certain area of ​​space by modulating waveforms and directional antennas to search for targets. Part of the electromagnetic energy radiated by the transmitter at the front end of the radar system will be reflected by the target, and the transmitted signal will be captured by the receiver at the front end of the radar system to extract target information, such as azimuth, distance, speed and other target characteristics. With the continuous advancement of radar technology, radar has been widely used in different occasions for navigation and detection. According to its working waveform type, it is divided into: continuous wave radar and pulse radar. Continuous wave radar is a radar that emits electromagnetic energy co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/28
CPCG01S7/28G01S7/2813
Inventor 王志华赵一辰苏崧
Owner NANJING UNIV OF SCI & TECH
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