Calibration method and system for high-strength field sensor

A technology for calibrating systems and calibration methods, applied in instruments, measuring devices, measuring electrical variables, etc., to achieve the effect of ensuring accuracy

Active Publication Date: 2017-03-08
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Problems solved by technology

[0004] The invention provides a high-intensity field sensor calibration method and system, which overcomes the problem that the standard field method

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  • Calibration method and system for high-strength field sensor
  • Calibration method and system for high-strength field sensor
  • Calibration method and system for high-strength field sensor

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[0024] In order to make the purpose, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

[0025] The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0026] figure 1 A schematic diagram of a system for calibration of field sensors for the prior art microwave and millimeter wave standard field method. For the calibration of 1GHz-18GHz field sen...

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Abstract

The present invention discloses a calibration method and system for high-intensity field sensors. The objective of the invention is to solve the problem that a standard field method is less likely to generate high field strength in a test area. The system of the invention comprises a transmitting antenna, a field strength meter, a reverberation chamber, a receiving antenna and a signal receiving system; the reverberation chamber comprises a horizontal agitator and a vertical agitator; the signal receiving system is used for measuring the field strength value of the receiving antenna. The method of the invention includes the following steps that: a calibrated field sensor is arranged in the field uniform area of the reverberation chamber, the transmitting antenna radiates electromagnetic waves into the reverberation chamber; the number of the times of the stepping of the horizontal agitator and the vertical agitator in one agitating cycle is set; when stepping occurs each time, the receiving field value of the field sensor and the aperture receiving power of the receiving antenna are measured; the average receiving field strength value of the field sensor and the average receiving field strength value of the receiving antenna in one agitating cycle are obtained; and the average receiving field strength value of the field sensor is compared with the average receiving field strength value of the receiving antenna, so that the field strength correction factor of the field strength sensor can be obtained. With the method and system of the invention adopted, the calibration of field strength sensors of which the field strength amplitude is above 200V/m can be realized.

Description

technical field [0001] The present application relates to the field of electromagnetic field measurement, in particular to a method and system for calibrating a field sensor. Background technique [0002] Field sensors are commonly used equipment for measuring field strength, and are widely used in electromagnetic environment monitoring, electromagnetic radiation hazard measurement, and electromagnetic compatibility tests for military and civilian products. The calibration of field sensors directly affects the accuracy of field strength measurements. For the calibration of 1GHz-18GHz field sensors, the IEEE Std 1309-2013 standard stipulates that the standard field method established by using a standard gain horn antenna and a full anechoic chamber can realize the calibration of field sensors with a field strength range below 200V / m. [0003] As the electromagnetic environment becomes more and more complex, the field strength amplitude is getting higher and higher, even reac...

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Application Information

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IPC IPC(8): G01R35/00
CPCG01R35/005
Inventor 王淞宇齐万泉黄承祖彭博张磊
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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