Millimeter-wave radar automatic calibration system and method
A millimeter-wave radar and automatic calibration technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of inability to accurately calculate the millimeter-wave radar calibration phase array, radar detection target error, etc., to minimize system errors and radar detection errors. , The effect of accurate calibration phase array and simple calibration process
Pending Publication Date: 2021-01-08
WUXI WEIFU HIGH TECH CO LTD
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However, due to the systematic error of the target simulator itself and the error of the radar detection target, it is not possible to accurately calculate and store the phased array used for millimeter-wave radar calibration through a single test.
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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0033] like figure 1 As shown, a millimeter-wave radar automatic calibration system proposed by the embodiment of the present invention includes a target simulator 1, a host computer 3, a test turntable 6, and a base 9;
[0034] The host computer 3 is connected to the target simulator 1 and the millimeter-wave radar 5 respectively; the test turntable 6 is installed on the base 9, and the millimeter-wave radar 5 is installed on the test turntable 6; the target simulator 1 is set several meters in front of the millimeter-wave radar 5 ;
[0035] Among them, the target simulator 1 is connected to the...
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The invention provides a millimeter-wave radar automatic calibration method. The method is suitable for a millimeter-wave radar automatic calibration system and comprises the following steps that: standard phase information of a receiving antenna is calculated according to a designed receiving antenna interval and a wavelength value; a millimeter-wave radar actual detection target is processed, sothat one-dimensional FFT data can be obtained, wherein the one-dimensional FFT data comprises actual phase information of the receiving antenna, and is used for calibrating phase information compensation by calculating phase difference information of an actual phase and a standard phase. According to the method of the invention, the calibration phase array of a millimeter-wave radar is obtained by automatically carrying out calibration calculation for multiple times and carrying out mean value processing on calculation results, and the calibration phase array is automatically updated to the millimeter-wave radar.
Description
technical field [0001] The invention belongs to the technical field of radar calibration, and in particular relates to an automatic calibration method for a millimeter-wave radar. Background technique [0002] Millimeter wave radar has the characteristics of high frequency, short wavelength, wide frequency band, small size, light weight, concealment and good maneuverability, etc. It has very bright application prospects in vehicle, guidance, military and other fields. Millimeter-wave radar uses the reflection of electromagnetic waves by targets to find and determine the position of targets. Usually, in order to improve the angular resolution, the millimeter-wave radar adopts the layout of multiple receiving antennas, and obtains the target angle information by calculating the phase of the receiving antennas. [0003] However, due to processing errors, process differences, and material differences in the antenna, the actual antenna parameters are often quite different from t...
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IPC IPC(8): G01S7/40
CPCG01S7/4021
Inventor 纪永飞岳靓韩邵君屈操闫红宇梅静栋
Owner WUXI WEIFU HIGH TECH CO LTD