JPS6336174A - Buoy for underwater position measurement - Google Patents

Abstract

PURPOSE:To eliminate the difficulties in submarine position determination and maintenance by providing a transponder with a function which can determines its earth coordinates. CONSTITUTION:A buoy for underwater position measurement consists of a responder part 1 and an earth coordinate calculation part 2. The responder part 1 consists of a transmitter-receiver 11 and a response circuit 12 and sends out a response signal in response to a question signal sent from an underwater moving body. The earth coordinate calculation part 2 is equipped with an antenna 21 and an earth coordinate calculating circuit 22, acquires a transmission radio wave from a navigation satellite such as GPS through the antenna 21, and supplies it to an earth coordinate calculating circuit 22. The output of the calculating circuit 22 is supplied to the response circuit 12 and this is sent as a response signal in a prescribed form through the transmitter-receiver 11. The moving body which receives the answer signal calculates the relative position to the underwater position measuring buoy by an earth coordinate calculator 100 and also calculates its earth coordinates.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a buoy for underwater positioning, and more particularly to a buoy for underwater positioning that is provided with the function of determining its own earth coordinates.

[Conventional technology]

Underwater position i used to measure underwater moving objects such as pooled water, scratches, etc. underwater at seven underwater positions: gt
So-called transponders are often used as buoys for 6111. This transponder receives the 1M signal output from the underwater vehicle and converts it to the required level.
This device has a function as a responder that sends out a signal into the water again, or a function that sends out a predetermined format of a transmission signal.

Underwater position measurements using such transponders are usually carried out using one of the following three methods:
! Ir1W It is used properly with all considerations in mind.

One of them is 5SBL (Super 5hort Ba5
e Line) method. In this method, a single transponder is placed on the ocean floor whose location is known, and the transponder outputs a predetermined transmission signal or operates as a responder. Underwater vehicles are located close to each other 311
Reception of Illll? Phase difference of 1g signal received by 5V and time (distance) from transmitted signal (interrogation signal) to received signal
Using -p, output the self position.

Part 2 is S L3, L (5hort Ba5e
This can be achieved using the L1ne) method. In this method, as in the case of the 5SBL method, one transponder is placed on the seabed with a known location, and three receivers that receive the transmitted wave output are placed as far apart as possible from each other on the bottom of the underwater vehicle, etc. The position of an underwater vehicle is determined by focusing on the arrival time difference between received signals and the time difference between the transmitted signal and the received signal. This method is clearly different from the first method in terms of the length between the receivers, that is, the measured baseline length (
Ba5e Line) becomes longer and the measurement sheath degree also improves.

The third option is achieved using the LBL (Long Ba5e Line) method. This method is used for operational purposes when a high total 6111 intensity is required over a wide area, and three transponders are placed at three points on the sea floor with known locations, and one receiver It receives the transmitted wave output and determines its own position from the arrival time difference. In this case, the transmission outputs of the three transhondas are set to different frequencies.

[Problem that the invention seeks to solve]

However, the above-mentioned conventional position meter 6111 of this type
All of these methods have the disadvantage that the location of the transponder on the seabed must be determined in advance, and that maintenance and maintenance thereof is difficult.

The purpose of the present invention is to eliminate the above-mentioned drawbacks and to fundamentally eliminate the difficulty of seabed position determination, maintenance, and maintenance by providing a transponder with the ability to determine its own earth coordinates. The purpose is to provide buoys.

[Failure to solve the problem]

The underwater position measuring buoy of the present invention includes a responder section that receives an interrogation signal by an underwater sound wave output from an underwater vehicle such as a submersible, responds to the interrogation signal, and transmits a response signal, and a transmitting power V of a navigation vehicle engineering star. It is configured to include the responder unit that receives the information, calculates its own earth coordinates and supplies the same, and an earth coordinate calculation unit that supplies the same.

〔Example〕

Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the underwater position side survey buoy of the present invention. The configuration of the embodiment shown in FIG. 1 consists of a responder section 1 and a global coordinate calculation section 2, and FIG. It is also shown.

The responder unit 1 is composed of a transducer 11 and a response circuit 12, and transmits a response signal in response to an interrogation signal transmitted from an underwater vehicle. This interrogation signal is a transmission signal in a predetermined format, and the response signal utilizes the earth coordinates of the buoy for the underwater position meter 6111 and is output in a predetermined format.

As an underwater moving object, the earth coordinates of the buoy for the underwater position Si side determined by Question No. It is possible to find the coordinates.

When an interrogation signal is output from the earth coordinate calculator 100, the underwater moving body converts it into a sound signal via the transducer 200 and radiates it into the water. This interrogation signal is received by the transceiver 11 of the responder section 1 of the buoy for the underwater position meter, converted into a tempo information signal, and supplied to the response circuit 12. The response circuit 2 outputs the earth coordinate data received from the earth position calculation unit 2, which will be described later, as a response signal in a predetermined format each time it receives question No. 1♂.

It is radiated into the water via the transducer 11. This response Ig is captured by the transducer 200 of the underwater mobile object,
The information is provided to the earth coordinate calculator 100 to calculate the relative position and earth coordinates.

For example, if the relative position is calculated using the 5SBL method described above, the transducer 200 uses at least three closely spaced 62 units, 8B1. In the LBL method, at least three transducers are required on the ship, and in the LBL method, at least one transducer is required on the underwater vehicle side.
buoys for underwater position measurement are required.

On the other hand, calculation of earth coordinates is performed as follows. In other words, the global position calculation unit 2 of the underwater level (α measurement buoy) is equipped with an antenna 21 and a global coordinate calculation circuit 22.
It captures all the radio waves transmitted by navigation satellites such as Oning 5atellite) and supplies them to the earth coordinate calculation circuit 22.

In this case, at least three fvL star radio waves are used, and the earth coordinate calculation circuit 22 calculates the earth coordinates of the underwater positioning buoy, that is, longitude and latitude information, using a method similar to the LIJL method. Earth coordinate calculation circuit 2211'i
This can be easily implemented, for example, by using a UPS receiver.

As for the output of the earth coordinate calculation circuit 22, the latest data is constantly supplied to and stored in the response circuit 12, which is read out and transmitted via the transducer 11 as a response signal in a predetermined format. The underwater mobile object that receives this response signal uses the earth coordinate calculator 100 to calculate the relative position to the underwater position measuring buoy as described above, and also obtains the earth coordinate data of the underwater position measuring buoy from the response signal. You can calculate it using your own earth coordinate calculator.

In such underwater position measurement, underwater position meter 6111
The buoy does not need to be installed on the seabed with a known location; it can be used with the antenna moored on the sea, parked or floating.

〔Effect of the invention〕

As explained above, according to the present invention, the buoy for underwater position measurement is provided with a function to calculate its earth coordinates, so that the buoy for underwater position measurement [6) 1] can be placed in a state where the position is unknown. This has the effect of fundamentally resolving the problem of installing a buoy on the seabed and having to maintain and maintain it in a difficult manner.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1...Resbonder section, 2...Ground thickness coordinate calculation section, 11...Transducer/receiver, 12...
Response circuit, 21... Antenna, 22...
-Earth coordinate calculation circuit, 100... Earth coordinate calculator, 200... Transmitter/receiver.

Claims (1)

[Claims] A responder unit receives an interrogation signal using underwater sound waves output from an underwater vehicle such as a submersible, responds to the interrogation signal, and transmits a response signal, and a responder unit receives a radio wave transmitted from a navigation satellite to calculate its own earth coordinates and transmits the above-mentioned coordinates. 1. A buoy for underwater position measurement, comprising: a ground coordinate calculation section that supplies a ground coordinate calculation section to a responder bonder section.