Based on micro-electro-mechanical system（MEMS）accelerometer

a parameter measurement system for unmanned aerial vehicle（UAV）catapult is researched and designed.By calibrating the sensor

calibrates its zero-offset

sensitivity and other parameters

compensate error while utilizing

and improves its precision.According to characteristics of actual acceleration signal

select proper bandwidth and sampling frequency

designs digital filter

while assure response frequency

at the same time

effectively reduce noise.Experiment show that the system not only reach technical requirement

but also reduce cost effectively

compared with other measurement modes.