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Millimeter-wave cloud detection radar based real-time online calibration method

A cloud measuring radar and millimeter wave technology, applied in the radar field, can solve the problems of sacrificing system performance indicators, unable to calibrate in real time, and time-consuming resources, and achieve the effects of low cost, strong practicability, and easy operation.

Active Publication Date: 2018-06-22
BEIJING INST OF RADIO MEASUREMENT
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Problems solved by technology

The disadvantage of method 1 is that it cannot be calibrated in real time, and the cost of performing a measurement is high, so it cannot be used as a general method; the disadvantage of method 2 is that it requires additional hardware costs (such as adding an additional receiving channel), or it will take time resources (this value is additionally measured during the repetition period), even at the expense of system performance indicators

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Embodiment Construction

[0034] The present invention is described in detail by the following examples. It is necessary to point out that this example is only used to further illustrate the present invention, and can not be interpreted as limiting the protection scope of the present invention. Those skilled in the art can according to the above invention Some non-essential improvements and adjustments have been made to the content. In the case of no conflict, the embodiments and the features in the embodiments of the present invention can be combined with each other.

[0035] The present invention provides a real-time online calibration method based on millimeter-wave cloud measuring radar, and its software processing flow is as follows: figure 1 As shown, the real-time calibration measurement is performed on the system transmit power and the gain of the receiving channel, and the internal signal source is used to calibrate the receiving channel at zero o'clock every day. The calibration results can b...

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Abstract

The invention discloses a millimeter-wave cloud detection radar based real-time online calibration method. The method includes: firstly, completing system operation foundation construction according to a hardware functional block diagram and a software flow diagram; secondly, in system operation, subjecting transmission module power and receiving channel gain to real-time measurement calibration;finally, completing once system internal calibration source calibration at the zero o'clock every day, and reporting state monitoring results to realize real-time system state monitoring. The method has advantages that firstly, by adoption of the simple low-cost scheme, the problem of high resource consumption in previous calibration is solved; secondly, real-time online calibration can be realized, real-time system fault monitoring is realized, and high reliability of acquired data is guaranteed; finally, the method is convenient and simple in operation and high in practicality and can be applied to practical millimeter-wave cloud detection radar systems. Therefore, the method is remarkably high in practicality and application value.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a real-time online calibration method based on millimeter wave cloud measuring radar. Background technique [0002] Since the millimeter-wave cloud measuring radar system needs to work unattended continuously for 24 hours, it is necessary to monitor the system status in real time to improve the reliability and stability of the system. At the same time, the system needs to perceive the important parameters and status of each subsystem during the measurement process, so it is necessary to perform real-time calibration to improve the measurement accuracy of the system. [0003] For the millimeter wave cloud measuring radar system, the following two methods are usually used for calibration. Method 1: The important parameters of the measurement system require professionals to carry special testing instruments for actual measurement. The measurement results obtained by this method are h...

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Application Information

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IPC IPC(8): G01S7/40G01S13/95
CPCG01S7/40G01S13/95Y02A90/10
Inventor 张鹏王志锐周亭亭
Owner BEIJING INST OF RADIO MEASUREMENT
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