Analysis of system error for HEMP measurement using integrated optical E-field sensors

This paper discusses system error of integrated optical E-field sensors when measuring high altitude electromagnetic pulse (HEMP). Based on the transfer function of detector and the expression of HEMP, the equations of system error are given. Through analysis of HEMP, the error equations get simplified. And the measurement results influenced by the parameters of the detector and the waveform are analyzed. The results show that the system error increases with the amplitude, full width at half maximum amplitude/rise time and the bias drift and the maximum measurement amplitude is 0.165 times of the half wave electric field and 0.23 times of the half wave electric field when the system error is 5% and 10%. The conclusion can provide a reference for this kind of detectors.