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Radar speed measurement system and method based on Rydberg atom superheterodyne measurement

A radar speed measurement and superheterodyne technology, which is applied in radio wave measurement systems, measurement devices, radio wave reflection/reradiation, etc., can solve the problems of small detection electric field strength, large thermal noise, large radar size, etc., to avoid Effects of thermal noise, size reduction, ease of miniaturization

Active Publication Date: 2019-11-22
QINGYUAN TIANZHIHENG SENSING TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventor found in the research that the defect of the traditional technology is that the receiving antenna of the existing radar speed measurement system is usually made of metal, and the detection accuracy of the electromagnetic signal is limited. Due to various constraints such as size, shape, and working environment, 1mV / cm is the recognized minimum detection electric field strength
In addition, traditional radar speed measurement systems often require complex circuit connections and filter amplification processing, resulting in large thermal noise
And the size of traditional radar is relatively large

Method used

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  • Radar speed measurement system and method based on Rydberg atom superheterodyne measurement
  • Radar speed measurement system and method based on Rydberg atom superheterodyne measurement
  • Radar speed measurement system and method based on Rydberg atom superheterodyne measurement

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Embodiment Construction

[0039] like figure 1 As shown, the radar velocity measurement system based on Rydberg atomic superheterodyne measurement includes transmitting antenna 1, microwave source 3 and atomic receiving antenna 4, where:

[0040] The transmitting antenna 1 is used to transmit signal microwaves, and the signal microwaves are scattered by moving objects to generate Doppler frequency shift;

[0041] The microwave source 3 is used to generate intrinsic microwaves consistent with the signal microwave frequency and initial phase;

[0042] The atom receiving antenna 4 is used to receive the intrinsic microwave and the signal microwave, and obtain the velocity information of the object therefrom;

[0043] The electric field amplitude of the signal microwave is much smaller than that of the intrinsic microwave;

[0044] The atomic receiving antenna mainly contains cesium bubbles, lasers and photodetectors. The cesium bubble provides the cesium atom gas under the saturated vapor pressure at r...

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Abstract

The invention relates to a radar speed measurement system and method based on Rydberg atom superheterodyne measurement. The system comprises a microwave source, a transmitting antenna and an atom receiving antenna used for replacing a traditional metal receiving antenna. The transmitting antenna is used for providing signal microwaves, and the signal microwaves are scattered by a moving object tobe subjected to speed measurement to generate Doppler frequency shift so as to carry speed information of the moving object to be subjected to speed measurement; the microwave source provides intrinsic microwaves, and the intrinsic microwaves serve as carrier waves of signal microwaves and are overlapped with the signal microwaves to be received by the atom receiving antenna. The atom receiving antenna provides alkali metal atoms and generates an EIT effect in a Rydberg state, and an EIT transmission peak appears; and the atomic antenna receives the intrinsic microwaves and the signal microwaves, so that the EIT transmission peaks are split, and the speed information of the moving object to be subjected to speed measurement is obtained according to the split distance between the two peaks.According to the invention, the detection sensitivity can be improved, the influence of thermal noise is avoided, and miniaturization and integration are easy.

Description

technical field [0001] The invention relates to the technical field of radar speed measurement, in particular to a radar speed measurement system and method based on Rydberg atomic superheterodyne measurement. Background technique [0002] At present, radar has been widely used in the field of speed measurement. Radar speed measurement mainly uses the Doppler effect: when the target is close to the radar antenna, the frequency of the reflected signal will be higher than the frequency of the transmitter; The frequency will be lower than the transmitter frequency. The relative speed between the target and the radar can be calculated by changing the value of the frequency. [0003] The inventor found in the research that the defect of the traditional technology is: the receiving antenna of the existing radar speed measurement system is usually made of metal, and the detection accuracy of the electromagnetic signal is subject to various constraints such as size, shape, and work...

Claims

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Application Information

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IPC IPC(8): G01S13/58G01S7/02
CPCG01S13/58G01S7/02
Inventor 梁洁廖开宇张新定颜辉
Owner QINGYUAN TIANZHIHENG SENSING TECH CO LTD
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