Pitching multi-beam weather radar and detection method thereof

Abstract

The invention discloses a pitching multi-beam weather radar, which comprises a base, an offset antenna reflecting surface, a plurality of feed source loudspeakers, a rotating base, a rotating mechanism, a first servo driver, a transmitting and receiving module, a data processor, a communication module, a power supply module and a power supply, the plurality of feed source loudspeakers are respectively connected with the transmitting and receiving module through a plurality of sets of parallel feed line systems, and generate a plurality of wave beams with pitch angle coverage ranges which are not overlapped with one another at the same scanning moment; and the data processor performs frequency conversion amplification on a frequency modulation signal or a phase encoding signal, then distributes the frequency modulation signal or the phase encoding signal to the plurality of feed source loudspeakers, radiates the frequency modulation signal or the phase encoding signal to the surface ofa detection target through the offset antenna reflecting surface, receives echo signals fed back by the plurality of feed source loudspeakers, and calculates detection target echo information by combining the received echo signals. The phased array weather radar successfully overcomes the defect that an existing phased array weather radar is high in cost, and meanwhile the problems that a traditional weather radar is long in observation time, complex in structure, low in reliability and the like are solved.

Description

technical field [0001] The invention relates to the technical field of pulse Doppler radar measurement, in particular to an elevation multi-beam weather radar and a detection method thereof. Background technique [0002] Since the birth of radar, people have started to use it to conduct research on precipitation detection and measurement. Meteorological and hydrologists have a strong demand for accurate forecasting of rainfall, and correct forecasting buys time for disaster prevention and mitigation. The main advantage of using radar for precipitation estimation is that it can acquire measurements over large areas with a fairly high spatial and temporal resolution. Traditional weather radars use volumetric scanning to conduct observations, and it takes more than 6 minutes to complete a scanning cycle. All angles need to be rotated and scanned, and the two sets of rotating drive systems also greatly reduce the reliability of the radar and increase the power consumption of t...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a multi-beam elevation radar and its detection method, which adopts the new design of multi-beam elevation and azimuth mechanical rotation scanning, and successfully solves the problem of high cost of the existing phased array weather radar by means of pulse Doppler technology. At the same time, it solves the problems of long observation time, complex structure and low reliability of traditional weather radar

Images