A method and system for calibrating characteristics of UHF electromagnetic pulse sensor

Abstract

The invention discloses a method and a system for calibrating characteristics of an ultra-high frequency electromagnetic pulse sensor, and belongs to the technical field of sensor characteristic calibration. The method for calibrating the characteristics of a UHF electromagnetic pulse sensor based on a single-cone antenna of the present invention forms a mirror-surface single-cone calibration system by constructing a high-power sub-nanosecond leading edge pulse source and a mirror single-cone antenna, and the high-power sub-nanosecond leading edge pulse The source is an all-solid-state pulse source based on avalanche triodes, which can be used to realize the calibration of UHF electromagnetic pulse sensors, so that the front edge of the output pulse can reach the order of hundreds of ps, and the peak voltage can reach the order of kV, so that it can generate high field strength sub-nanometry. The standard field environment of second electromagnetic pulse can realize the calibration of high-amplitude fast-front UHF electromagnetic pulse sensors, thereby greatly improving the measurement level of GIS comprehensive pulse radiation environment, and solving the problem of high-amplitude fast-front UHF electromagnetic pulse measurement sensors. For the calibration problem, the scheme is simple, practical, feasible and easy to implement.

Description

technical field [0001] The invention relates to a characteristic calibration method and system of an ultra-high frequency electromagnetic pulse sensor, and belongs to the technical field of sensor characteristic calibration. Background technique [0002] Different from the electromagnetic compatibility continuous wave electric field signal, the electromagnetic pulse is a kind of transient signal, which has the characteristics of fast rising edge, short duration, high amplitude and wide frequency band. Therefore, the test system is required to have a very wide test bandwidth and a large linear dynamic range, which puts forward new requirements for measurement sensors and calibration systems. At present, there are no relevant calibration and calibration standards or specifications in the world, usually based on IEEE STD 1309-2013 issued by IEEE in 2013. [0003] Among the three calibration methods proposed by this standard, the B-type calibration method is the most commonly u...

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Problems solved by technology

Domestic Tsinghua University, Northwest Institute of Nuclear Technology and other units have developed related mirror single-cone calibration systems, but the electromagnetic pulse front and amplitude generated by the calibration system are limited, and it is difficult to realize the high-field fast-front UHF electromagnetic pulse sensor. calibration

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