Method used for synchronously collecting meteorological radar servo information and intermediate-frequency signal

A servo information and weather radar technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of asynchrony between echo acquisition and angle storage, and low utilization of hardware resources.

Active Publication Date: 2018-05-04
BEIJING INST OF REMOTE SENSING EQUIP
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for synchronous acquisition of meteorological radar servo information and intermediate frequency signals, which solves the problems of low utilization of system hardware resources and asynchronous echo acquisition and angle storage in previous methods

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0034] A method for synchronous acquisition of weather radar servo information and intermediate frequency signals includes the following steps:

[0035] The first step is to build a test control system

[0036] The test control system includes: an initialization module, a top-level event control module, a UDP communication module, a system timing module, a transmission signal parameter control module, a mode selection module, a synchronization control module and a high-speed data acquisition module.

[0037] The functions of the initialization module are: to complete the reset of the high-speed data acquisition card, the initialization of the operation interface and the self-test of the radar system.

[0038] The function of the top-level event control module is to start the event-driven structure of LabVIEW and wait for the occurrence of user interface events.

[0039] The function of the UDP communication module is: full-duplex mode, through 100M Ethernet to realize data se...

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Abstract

Disclosed is a method used for synchronously collecting meteorological radar servo information and intermediate-frequency signals, the method preventing a contradiction that angle information and echoinformation do not correspond in terms of collection and storage, reducing the complexity of subsequent algorithms to a great extent and increasing a utilization rate of hardware storage resources. According to the method, a timing module is utilized to guarantee time reference synchronization between a comprehensive test device and a signal processor; a LabVIEW (Laboratory Virtual Instrument Engineering Workbench) event driven architecture and a parallel structure are utilized to realize synchronization of servo storage operation and intermediate-frequency echo collection, so that synchronization of front panel operation and angle information storage and echo signal collection is guaranteed; an accurate time-delay module is adopted to offset system transmission time delays and communication transmission time delays, so accurate synchronization of real-time data collection and regular backhaul servo information is realized; and readability and effective utilization rates of data filesare improved by adding time headers to each group of data. According to the method, synchronization of meteorological radar servo information storage and intermediate-frequency echo signal collectionis greatly realized.

Description

technical field [0001] The invention relates to a method for synchronous acquisition of servo information and intermediate frequency signals, in particular to a method for synchronous acquisition of weather radar servo information and intermediate frequency signals. Background technique [0002] In practical application, the weather radar system is flexible in design, and different working modes and signal parameters are required in the workflow test. The most important and most frequently used mode is the observation mode. In this mode, each combination works normally, and the signal processing returns The servo information is transmitted, the comprehensive test equipment collects the radar intermediate frequency echo, and the algorithm processing combines the servo information and the echo data storage file to solve the meteorological information in the observation mode. [0003] The current servo information return and echo data acquisition methods are separately controll...

Claims

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Application Information

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IPC IPC(8): G01S7/292
CPCG01S7/292
Inventor 李爱华向巍
Owner BEIJING INST OF REMOTE SENSING EQUIP
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