Observation Principle
• Detect low-frequency/very-low-frequency electromagnetic wave signals radiated during the occurrence of lightning, including magnetic field signals and electric field signals.
• Use coils to measure magnetic field variation signals via electromagnetic induction. Measure the magnetic field signal components in the east-west and north-south directions through orthogonal coils, and determine the incoming direction of the magnetic field through the magnitude of the components;
• Use a flat antenna to measure electric field variation signals using the principle of charge induction;
• Use the principle of charge induction to measure electrostatic variation signals.
Functional Features
• The thunderstorm instrument is used to replace manual observation of thunderstorm activities, promoting the automation of meteorological observation methods and the development of meteorological observation modernization.
• Realize automatic observation of thunderstorms, replacing the existing manual observation methods.
• Compared with manual observation, the automatic observation of thunderstorms provides 24-hour outdoor observation around the clock, avoiding the problems of missed points and missed time in manual observation.
• Electronic data, convenient for storage, retrieval and migration.
• Obtain observation elements such as thunderstorm monitoring and warning information, thunderstorm information and thunderstorm cell information.
Technical Indicators
Functional technical specifications
Thunderstorm timing accuracy: 1 min~6 min, adjustable
Thunderstorm azimuth error: ≤1 unit
Thunderstorm distance error: ≤5 km
Thunderstorm detection radius: 30 km
Detection efficiency: Single-lightning thunderstorms: ≥90%; Multi-lightning thunderstorms ≥95%
Monitoring and warning technical specifications
Monitoring area radius: 15 km; False negative rate: ≤30%
Average lead time: ≥15 min; False alarm rate: ≤30%
Business Applications
Replace manual observation of thunderstorm activities at meteorological observation stations.
