Title:
INSTRUMENT FOR MEASURING SPEED OF METEOROLOGICAL SUBJECT, AND METHOD THEREFOR
Document Type and Number:
Japanese Patent JP3530940
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To accurately measure an ascending speed and a descending speed of a meteorological subject, without being affected by a shift in a flying direction and a shift in a beam emitting angle, when the ascending speed and the descending speed of the meteorological subject such as rain, snow and cloud is measured using a pulse-pair type Doppler radar from a flying body.
SOLUTION: This measuring instrument is provided with a means for conducting orthogonal detection of a reflected electromagnetic wave, a means for calculating a conjugate product of the first-pulse reflected electromagnetic wave after the orthogonal detection and the second-pulse reflected electromagnetic wave after the orthogonal detection to calculate a phase change resulting from the meteorological subject, and to calculate a phase change resulting from a ground surface, and a means for calculating the shift in the beam emitting angle of a pulse-paired transmitted electromagnetic wave based on the calculated phase change resulting from the ground surface to measure the speed of the meteorological subject based on the calculated shift angle and the calculated phase change resulting from the meteorological subject.
More Like This:
| WO/2020/132134 | DEVICE AND FOR ENVIRONMENT STATE ESTIMATION AND PREDICTION |
| JP2023067922 | DEVICE AND METHOD |
| JPS5547471 | WEATHER FORECASTING MACHINE |
Inventors:
Kobayashi, Osamu
Application Number:
JP2001386858A
Publication Date:
May 24, 2004
Filing Date:
December 20, 2001
Export Citation:
Assignee:
COMMUNICATION RESEARCH LABORATORY
International Classes:
G01W1/00; G01S13/50; G01S13/95; G01W1/08; (IPC1-7): G01S13/95
Attorney, Agent or Firm:
福井 國敞 （外１名）