The atmospheric pressure measurement is closed related to the aircraft flight and it is the key factordirectly affecting the aviation flight safety. With the development of aircraft, the barometric altitudemeasurement technology is more and more prominent and important. According to the barometric altitudemeasurement principle and the general barometric altitude measurement methods, four kinds of measurementmethods of bellows, vibration cylinder, silicon resonant and silicon piezoresistance are analyzed with theprinciple and compared from the application.
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