In order to find substitute for the high temperature pressure sensor with cooling system

the pressure sensor based on ion current for pulse detonation engine（PDE）is developed.Technique supports are provided for the research and development of the high temperature pressure sensor for PDE.The reliable test signals are provided for the performance analysis

control law and control tactics of PDE.Through analysis comparison of two kinds of ion probes and research on the length and bias pressure of probes

an ion sensor with single-pole and short probe is designed.The waveform of ion current signals is similar to pressure signals.The decay rate of the ion current with high reliability and low cost is measurable.Based on the results the further researches of the quantitative relationship between the ion current and pressure can be made.