Millimeter-wave radar signal frequency measuring device and method

Abstract

The invention discloses a millimeter-wave radar signal frequency measuring device which is characterized in that a frequency mixer receives an emission signal of a measured millimeter-wave radar and sends an intermediate frequency signal to an AD sampling unit after the emission signal and a frequency mixing signal of the frequency mixer are subjected to frequency mixing processing; a central processing unit sets the working frequency of a frequency mixing signal of the frequency mixer, and sends an intermediate frequency signal to a rear-end processing device at the same time; a first calculation unit is used for enabling a display unit to start to display a sine wave signal of a time domain when the frequency mixing signal is gradually increased to the working frequency of a first frequency mixing signal, calculating the frequency of the intermediate frequency signal at the time, and obtaining a first group of possible emission frequencies of the measured millimeter-wave radar; and a second calculation unit is used for calculating the frequency of the intermediate frequency signal at the moment when the working frequency of the frequency mixing signal is increased by a deviation frequency on the first frequency mixing signal so as to obtain a second group of possible emission frequencies of the measured millimeter-wave radar. Cost can be reduced, the vacancy of high-frequency test instruments is filled, and test technical support is provided for research and development of millimeter-wave radars for small, medium and micro enterprises.

Description

technical field [0001] The invention relates to a millimeter-wave radar testing technology, in particular to a millimeter-wave radar signal frequency measurement device and method. Background technique [0002] Prototype verification and testing of frequency-modulated continuous wave (FMCW) radars presents many challenges, and during the development phase, several verification and validation tests are required to ensure that FMCW radars provide the intended functionality. Among them, mastering the core test method of its transmission frequency is of great value for developing products with excellent performance and reliable quality. [0003] At present, the frequency test equipment of millimeter-wave radar is mainly from foreign suppliers. Most of the test equipment of foreign suppliers can perform all-round performance evaluation on the transmitter and receiver of millimeter-wave radar, and can perform distance, speed, and angle of multiple targets. However, a large number...

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Problems solved by technology

[0003]At present, the frequency test equipment of millimeter wave radar is mainly from foreign suppliers, and most of the test equipment of foreign suppliers can fully test the transmitter and receiver of millimeter wave radar. The performance evaluation of various aspects can test the distance, speed, angle and other aspects of multiple targets. However, a large number of domestic enterprises sometimes only need to test the transmission frequency of millimeter-wave radars, and do not need to conduct comprehensive tests on their transmitters and receivers. At present, there is a lack of corresponding test equipment and methods

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