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All-solid-state dual-band dual-polarization Doppler weather radar system and radar measurement method

A weather radar, dual-band technology, applied in all-solid-state dual-band dual-polarization Doppler weather radar system and radar measurement field, can solve the problem of inability to completely and accurately record the changes of cloud and rain in the rainfall process, and achieve a guaranteed accuracy. Effect

Active Publication Date: 2018-02-13
航天新气象科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an all-solid-state dual-band dual-polarization Doppler weather radar system and a method for radar measurement, which solves the problem that the current single-band weather radar cannot completely and accurately record the cloud and rain changes in the entire rainfall process question

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Embodiment 1

[0020] Embodiment 1. An all-solid-state dual-band dual-polarization Doppler weather radar system. Combine below figure 1 The system provided in this embodiment will be described.

[0021] see figure 1 , the Doppler weather radar system provided by this embodiment includes a control computer 1, a servo 2, an antenna base 3, a Ku frequency band subsystem and a Ka frequency band subsystem; the control computer 1 is connected to the servo 2 and the antenna base 3 respectively, so The servo 2 is connected to the antenna base 3, the antenna base 3 is connected to the Ku frequency band subsystem, and the Ku frequency band subsystem is connected to the Ka frequency band subsystem.

[0022] The control computer 1 is used to send control commands to the Ku-band subsystem; it is also used to receive the Ku-band detection data input by the Ku-band subsystem and the Ka-band detection data output by the Ka-band subsystem, and to the Ku-band subsystem. The frequency band detection data an...

Embodiment 2

[0035] Embodiment 2. A method for radar measurement using an all-solid-state dual-band dual-polarization Doppler weather radar system. The following combination figure 2 The radar measurement method provided in this embodiment includes:

[0036] S1. The control computer sends a control command to the Ku frequency band subsystem;

[0037] S2a. After receiving the control command, the Ku-band subsystem generates the first radio frequency signal of horizontal polarization or vertical polarization, radiates to the meteorological target in space, and receives the returned first scattered echo, and responds to the first scattered echo. wave, and output the Ku-band detection data to the control computer, wherein the Ku-band detection data at least includes echo intensity, radial velocity, velocity spectrum width, and polarization information; and the control command that the Ku-band subsystem will receive forwarded to the Ka-band subsystem;

[0038] S2b. When the Ka-band subsyste...

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Abstract

The invention discloses an all-solid-state dual-band dual-polarization Doppler weather radar system, which comprises a control computer, a servo, an antenna pedestal, a Ku-band subsystem and a Ka-band subsystem. The computer controls power-up state and working state of the Ku-band subsystem and the Ka-band subsystem to realize detection of weather targets of cloud, snow, rain and fog and the like in the sky and to obtain weather target height, echo intensity, radial velocity, speed spectrum width and linear depolarization ratio, differential reflectivity, differential transmission phase displacement, differential transmission phase displacement rate and correlation coefficient and the like polarization information. Characteristics of the Ka band and Ku band are combined, and a brand-new method is provided for combined detection of the weather targets of cloud, snow, rain and fog and the like, thereby realizing complete and accurate recording of the whole raining process and rain and wind change information, and ensuring accuracy of radar detection.

Description

technical field [0001] The invention relates to the field of weather radar measurement, in particular to an all-solid-state dual-band dual-polarization Doppler weather radar system and a method for radar measurement. Background technique [0002] The original weather radar system works with a single frequency. Weather radars of different frequencies are usually used to detect different meteorological targets, such as Ku-band, X-band, and C-band weather radars are mainly used for rainfall detection. For meteorological targets such as clouds and fog The detection sensitivity is poor; the Ka frequency band and W frequency band are mainly used for the detection of meteorological targets such as clouds, fog, and weak rainfall, and the detection results of heavy rainfall are inaccurate. Therefore, a weather radar system with a single frequency band cannot completely and accurately record the change of cloud water during the entire rainfall process. Even if two single-band weather...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/95
CPCG01S13/95Y02A90/10
Inventor 周亭亭冯凯张鹏李岩松王志锐
Owner 航天新气象科技有限公司
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