Real-time calibration system and method of millimeter wave cloud-detection radar

Abstract

The invention relates to a real-time calibration system and method of millimeter wave cloud-detection radar. The real-time calibration method includes the steps that a synchronous control signal is generated, a calibration testing signal of a receiver is generated, calibration is performed on gains of receiver channels, a target detection driving signal is generated in the same cycle and transmitted to space, meanwhile, a transmitting power monitoring signal is generated, and transmitting power of a transmitter is calibrated; target detection echo signals are received; the calibration testing signal of the receiver, the transmitting power monitoring signal and the target echo signals are each processed, and therefore corresponding power spectrum data are obtained; the power spectrum data are processed, so that calibration data are obtained. In the actual detection process of the millimeter wave cloud-detection radar, the real-time calibration signal is added, and the power of the transmitter and the gains of the receiver receiving channels are measured and calibrated on line, so that the status parameters of a radar system are obtained in real time; the target echo intensity is calibrated in real time, in this way, the accuracy of measuring the detection data in a quantified mode is guaranteed, and real and reliable observational data are provided for meteorological observation.

Description

technical field [0001] The invention relates to the field of radar technology, in particular to a real-time calibration system and method for millimeter-wave cloud measuring radar. Background technique [0002] The millimeter-wave cloud measuring radar is mainly used to detect meteorological targets such as clouds, fog, and weak precipitation. It uses the scattering effect of small particles on electromagnetic waves to continuously detect the echo signals of meteorological targets in a certain area above the site, and obtain high-temporal-spatial resolution. Meteorological target information has the ability to accurately observe meteorological targets in three-dimensional space, and can continuously monitor weather changes. It can be used in atmospheric scientific research, artificial weather modification, automatic cloud observation, environmental pollution monitoring, airport meteorological support, military meteorological support and other aspects and fields. [0003] Wi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a real-time calibration system and method for the millimeter-wave cloud-measuring radar to solve the problem that the original millimeter-wave cloud-measuring radar can only be calibrated outside the machine regularly and does not have real-time Inability to fully guarantee the measurement accuracy of observation data

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