The invention discloses a
frame synchronization device capable of suppressing and measuring Doppler in
underwater acoustic communication, relating to
underwater acoustic communication equipment. The
frame synchronization device is provided with a front-loading module, an analogue-
digital conversion module, an operation module and a
frame synchronization establishment / Doppler measurement module. The input end of the front-loading module is connected with the
signal output end of an
underwater acoustic
transducer at a receiving end; the analogue-
digital conversion module is composed of three paths of AD (analogue-digital) sampling
converters, namely, an ADC (Analogue-
Digital Converter) 1, an ADC2 and an ADC3 which are controlled by DDS (Digital Direct
Frequency Synthesis) chips, namely, a DDS1, a DDS2 and a DDS3, and the input ends of the three paths of AD sampling
converters, namely, the ADC1, the ADC2 and the ADC3 are connected with the output end of the front-loading module; the input end of the operation module is connected with the
digital signal output ends of the three paths of AD
sampling circuits, namely, the ADC1, the ADC2 and the ADC3 after analogue-
digital conversion; and the input end of the frame synchronization establishment / Doppler measurement module is connected with the three operation result output ends of the operation module after related
processing copying.
Doppler effect suppression can be simply and conveniently realized, and Doppler can be measured in
underwater acoustic communication.