Synchronous signal system data transmission method applied to underwater acoustic transmission system
A data transmission method and technology for synchronizing signals, applied in the field of underwater acoustic data transmission, can solve problems such as low accuracy, inability to overcome error correction, and insufficient real-time performance, and achieve the effects of improving efficiency, ensuring stability, and avoiding interference.
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Embodiment 1
[0042] Embodiment 1: An underwater acoustic synchronous signal system transmission system, comprising: a transmitter for transmitting an underwater acoustic command signal to a transponder and a response signal sent by the transponder; a transponder for receiving the underwater acoustic command sent by the transmitter signal or receive the response signal sent by another transponder, and transmit the underwater acoustic signal to the transmitter or another transponder; the underwater acoustic synchronous signal system, the periodic time pulse signal, is written into the transmitter and the transponder It is used as an information carrier for underwater acoustic communication, and the periodic time pulse signals in the transmitter and transponder are in a synchronized state.
[0043] A digital temperature sensor and a digital depth sensor are installed on the transponder to obtain temperature information and depth information, and are used to convert the temperature information ...
Embodiment 2
[0058] Embodiment 2: A method for data transmission of an underwater acoustic synchronous signal system, comprising the following steps:
[0059] S1. The transponder will obtain the information X to be transmitted and convert it into time information DX; such as the depth information, water pressure information or temperature information in the environment where the sensor is located; and establish these information with the conversion constant and the underwater acoustic transmission delay time DX Linear relationship, so that the delay time DX contains the information that needs to be transmitted;
[0060] S2. After the falling edge of the synchronous signal of the transmitter is valid, the transmitted data reads the signal command code, and spreads out through the seawater medium for the transponder to receive;
[0061] S3. After the transponder receives the data reading signal command code after the Tx time, delay T Δ , transmit the first response underwater acoustic signa...
Embodiment 3
[0071] Embodiment 3: Application of underwater acoustic synchronous signal system data transmission method in seabed positioning
[0072] Transmitter, each transponder use a consistent synchronization signal system, see image 3 , this method includes the following steps:
[0073] Step 1. Send the command code S1 of the underwater acoustic positioning signal immediately after the falling edge of the synchronization signal of the transmitter is valid;
[0074] Step 2. Each transponder X passes through T X After receiving the command code S1 of the underwater acoustic positioning signal after a time delay of T Δ After that, transmit the first response signal A1 X ;
[0075] Step 3. After the next falling edge of the synchronization signal arrives, each transponder X immediately transmits the second response signal A2 X ;
[0076] Step 4. The receiver receives the command code S1 of the underwater acoustic positioning signal and several groups of first response signals A1 ...
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