Ranging method, system and medium based on chirp ultrasonic wave
A technology of linear frequency modulation and ranging method, which is applied in the direction of radio wave measurement system, sound wave re-radiation, measuring device, etc., can solve the problems of unrecognizable time and high computational complexity, and achieve reduced computational complexity, high precision, and energy saving cost effect
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[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.
[0037] At present, there are quite a few ultrasonic ranging scenarios where the distance between the measured object is relatively close and the measurement results require high precision. For example, in order to understand the aging of rubber, it is necessary to accurately measure the distance change between the upper and lower partitions. The distance between the upper and lower plates of the vibrator shall not exceed 50cm. Aiming at the defects existing in the current ultrasonic ranging method, this embodiment proposes a ranging method based on chirped ultrasonic waves, such as figure 1 shown, including the following steps:
[0038] S1) generating a continuous chirp ultrasonic signal as a first chirp ultrasonic signal, regularly transmitting the first chirp...
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