In the design of contact overvoltage sensor

the effective bandwidth of measurement system is limited due to the influence of distributed parameters in the line. In view of this

the deconvolution signal restoration algorithm is studied

the traditional incremental Wiener deconvolution algorithm is improved

and an improvement algorithm for γ prediction is proposed. With the help of partial pressure measurement system at the end of casing screen

the test is carried out. The results show that the proposed algorithm can repair the distorted high frequency components in the measurement results by processing the output waveform of the sensor

so as to obtain the original input voltage waveform accurately and further expand the measurement bandwidth of the measurement system.