Seabed underwater acoustic response type positioning method and system based on synchronous signal mechanism

A technology of synchronizing signals and positioning methods, applied in radio wave measurement systems, re-radiation of sound waves, instruments, etc., can solve the problems of inability to overcome error correction, insufficient real-time performance, and low accuracy, and achieve improved underwater acoustic positioning accuracy, Solve the effect of positioning time delay and ensure stability

Pending Publication Date: 2019-01-11
中国船舶重工集团公司七五0试验场
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current underwater positioning system has problems such as low accur

Method used

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  • Seabed underwater acoustic response type positioning method and system based on synchronous signal mechanism
  • Seabed underwater acoustic response type positioning method and system based on synchronous signal mechanism
  • Seabed underwater acoustic response type positioning method and system based on synchronous signal mechanism

Examples

Experimental program
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Effect test

Example Embodiment

[0060] Embodiment 1 A submarine underwater acoustic response positioning system based on a synchronization signal system includes: a target transmitter 1, which is installed on a device that needs positioning, and is used to transmit positioning function codes and receive response signals; a submarine transponder 2, at least three One, distributed around the target transmitter 1 on the seabed, used to receive the positioning function code or response signal sent by the target transmitter 1 or other submarine transponders 2, and can transmit the response signal; the synchronization signal system is written into the target transmitter 1 and the submarine transponder 2 are used as information carriers for underwater acoustic communication, and the synchronization signal system in the target transmitter 1 and submarine transponder 2 is in a synchronized state; the receiver 3 is located above the submarine transponder 2 and The target transmitter 1 is in communication connection for ...

Example Embodiment

[0065] Example 2: Submarine underwater acoustic response positioning method based on the synchronization signal system, the target transmitter and each submarine transponder use a consistent synchronization signal system, please refer to Picture 10 , This method includes the following steps:

[0066] Step 1. The underwater acoustic positioning signal instruction code S1 is sent out immediately after the falling edge of the synchronization signal of the target transmitter is valid;

[0067] Step 2. Each submarine transponder X passes through T X After receiving the command code S1 of the underwater acoustic positioning signal, it will be delayed by T Δ After that, the first response signal A1 is transmitted X ;

[0068] Step 3. After the falling edge of the next synchronization signal arrives, each submarine transponder X immediately transmits the second response signal A2 X ;

[0069] Step 4. The receiver receives the underwater acoustic positioning signal command code S1 and several ...

Example Embodiment

[0085] Example 3:

[0086] On the basis of embodiment 1, before step 1, it also includes the step of equipment underwater acoustic synchronization timing. The equipment includes each subsea transponder and target transmitter, and the synchronization timing is each subsea transponder and target transmitter. The internal atomic clock is synchronized.

[0087] The synchronization time service steps of the underwater acoustic equipment include:

[0088] S1, the first timing signal instruction code is sent out immediately after the falling edge of the synchronization signal of the target transmitter is valid;

[0089] S2, each submarine transponder X passes through T X After receiving the first timing signal instruction code after time, all delay T Δ After that, respectively transmit their own No. 1 response signal;

[0090] S3, target transmitter at 2T X +T Δ After receiving the response signal of each number one after time, after the falling edge of the next synchronization signal, the pe...

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Abstract

The invention discloses a seabed underwater acoustic response type positioning method and system based on a synchronous signal mechanism. The system mainly comprises a target transmitter, seabed transponders, a cable control receiver, an onboard processor and the like. The target transmitter is in communication interconnection with the onboard processor. The onboard processor is used for remotelytransmitting underwater acoustic instructions to a seabed transponder array. The seabed transponders are used for realizing signal response among the seabed transponders or between the seabed transponders and a cable control transmitter. The cable control receiver is used for receiving underwater acoustic distance information from the seabed transponders to the cable control transmitter. The onboard processor is used for calculating coordinate position information of the cable control transmitter and visually displaying the coordinate location information. In the underwater acoustic positioning mode, the great depth, large area, high precision, high timeliness and multi-target point synchronous positioning problem under complex sea conditions is solved, seabed real-time location positioning demands of different models of devices are satisfied, and a demand of navies for generalization, serialization and combination of dedicated guarantee equipment is satisfied.

Description

technical field [0001] The invention relates to an underwater ultrasonic signal transmission application technology, and relates to an underwater acoustic positioning technology, in particular to a submarine underwater acoustic response positioning method and system based on a synchronous signal system. Background technique [0002] As far as the underwater acoustic positioning system is concerned, there are various forms of positioning arrays at home and abroad. According to the installation form of the base array, there are bottom-mounted base arrays, buoy-type base arrays and ship-mounted base arrays; according to the length of the baseline, there are ultra-short baseline arrays, short baseline arrays and long baseline arrays. [0003] Especially in the case of a water depth of 6000m and strong background noise, the positioning accuracy must reach meter-level accuracy. Since the ship-borne and buoy-based arrays need to pass through the water depth of 6000m, the sound vel...

Claims

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Application Information

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IPC IPC(8): G01S15/74G01S7/521
CPCG01S7/521G01S15/74
Inventor 汪天伟童赛美周红坤邓玉聪綦森生潘少华
Owner 中国船舶重工集团公司七五0试验场
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