Continuous-Wave Weather Radar Echo Intensity Calibration Without Shutdown
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Solution Overview
Problem
Continuous wave weather radar systems face accuracy issues due to performance deviations that require manual calibration, necessitating shutdowns and increasing maintenance costs, while traditional calibration methods interrupt normal operations and are not suitable for continuous data collection.
Innovation Solution
A system for echo intensity calibration using a communication module, main control module, and storage module to perform online calibration by identifying aircraft echoes, processing radar data, and adjusting for fluctuations in echo power without shutting down the radar, utilizing a network protocol and specific threshold criteria to ensure accuracy and consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional calibration methods using standard signal sources are employed, then echo intensity accuracy is improved, but radar operation continuity deteriorates due to required shutdowns
Solution Approach 1:
The radar system performs self-calibration using aircraft echoes naturally observed during normal operation. The system automatically identifies aircraft targets, extracts their echo signals, and uses them as reference standards for calibration without requiring external calibration equipment or system shutdown, enabling the radar to calibrate itself while maintaining continuous operation
Solution Approach 2:
Aircraft echoes serve as an intermediary reference standard between the radar system and the calibration process. Instead of directly using standard signal sources that require system shutdown, the system uses naturally occurring aircraft echoes as a mediator to achieve calibration during normal operation, bridging the gap between continuous operation and accurate calibration
2Measurement precision
If manual calibration by professional technicians is performed, then echo intensity accuracy is improved, but maintenance cost and operational complexity increase
Solution Approach 1:
The calibration function that previously required professional technicians is transformed into an automated self-service process. The system automatically identifies aircraft echoes, extracts relevant parameters, performs calibration calculations, and updates calibration data without human intervention, significantly reducing operational complexity and maintenance costs while maintaining calibration accuracy
Solution Approach 2:
The manual mechanical calibration process involving technicians and calibration equipment is replaced by an automated electronic system that uses signal processing algorithms to identify aircraft echoes and perform calibration calculations automatically, substituting human labor and complex manual procedures with automated computational methods
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables continuous operation with accurate and consistent radar data collection by automatically calibrating echo intensity, reducing maintenance costs and ensuring data quality without manual intervention.
Implementation Method 1
One antenna is used for transmitting electromagnetic signals, and the other antenna is used for receiving electromagnetic signals
Implementation Method 2
the study on the vertical structure of cloud and precipitation helps people to understand the formation mechanism of cloud and precipitation. The research on this part mainly relies on the high-resolution continuous wave vertically pointing weather radar for vertical detection
Implementation Method 3
The function and structure of this radar are quite different from that of traditional weather radar
Data Source
AI summary
The present disclosure discloses a system for echo intensity calibration based on continuous wave weather radar data. The system includes a communication module used for establishing a network protocol or local protocol-based communication link between a radar receiver and a radar terminal computer; a main control module which is in communication connection with the communication module to receive radar data of the radar receiver or a control signal of the radar terminal computer and execute an echo intensity calibration strategy; and a storage module which temporarily stores continuous wave weather radar data, and aircraft echo power values that are identified by the main control module within a period of time.