The authors put emphasis on the statistic and analysis of seismic-electrical abnormal rectangle pulsation signals and volcano data worldwide from 1991 to 1999.

The calculation for the nominal velocity resolution parameter and Doppler resolution constant of a signal made up of several rectangular pulses according to the definition is always complex, especially when it is a multiple-period signal.

However,in calculating the range nominal resolution of rectangular pulse signals using conventional definition formula,quadrature operation for range ambiguity function or infinite integration for "SIN" function is required.

Experiment of correlation detection of weak laser pulse signals;

Portable pulse signal apparatus based on single-chip microprocessor

Research of waveform design based on UWB pulse signal

When the running situation of a rotating machine becomes abnormal or a part of it does not work well,it usually generates a periodic vibration signal or a periodic acoustic signal,which generally are periodic impulse signals with relatively strong noise.

The time domain electric field integral equation (TD-EFIE) in conjunction with the reciprocity principle is applied to synthesize the transmitting impulse signals on condition that the receiving signals have already been known.

The paper introduces a designed time domain antenna which can make the measuring electromagnetic impulse signal not distorted.