RU2548937C1 - System of objects guarding from water side with information direct transmission via border water-air - Google Patents

Abstract

FIELD: radio-engineering, communication.

SUBSTANCE: guarding system is intended for use at water areas, lakes, in river streams and channels. Use in the system of the direct information transmission via the border water-air ensures prompt deployment of the guarding system in the monitoring zone without cables routing on bed and without radio beacons use on the water surface thus excluding possibility of the unauthorized external effects on the system.

EFFECT: increased reliability and efficiency of the guarding system, simplification and cheapening of the transmission to the receiving point of the underwater situation information under complicated conditions of underwater monitoring and guarding measures at real water areas.

2 dwg

Description

The invention relates to technical means of protecting objects from the aquatic environment from swimmers-terrorists with provided protection against possible external influences for use in marine areas, lakes, river channels and canals.

The proposed security system can be used to organize the protection of coastal facilities from the aquatic environment or the protection of underwater structures, such as cables laid under water, collectors, pipelines, as well as the protection of ships at anchorage, offshore oil platforms, port entrances, bridge supports, canals, water areas of hydro and nuclear stations, piers, shipyards, harbors from potential violators or terrorists.

To solve the protection tasks in such conditions, they usually organize means for detecting underwater targets placed in the aquatic environment, such as sonars, sound receivers, magnetometers. In addition, the mandatory elements of such systems are the means of transmitting information about the detected targets to the reception point, requiring laying cables along the bottom or using beacons on the water surface. So, in the security system described in patent RU 2161319 C1, for the detection of underwater objects, a set of sonar stations are used that form the barrier line of the line, with the transmission of received echoes through the cable line to the coastal post. As a result, it is not possible to quickly deploy the security system in the observation zone, to ensure its secrecy, and it is impossible to exclude unauthorized external influences in relation to it.

The problem to which the proposed invention is directed is to create a security system with a simple implementation and an extended scope, allowing you to quickly deploy the system and secretly transmit information about the detected targets to the receiving point and thereby increase the reliability and efficiency of the system.

To solve this problem, it is proposed to use the direct transmission of information signals from the aquatic environment through the water-air boundary in the security system. A prerequisite for the possibility of such a transfer is the well-known physical processes that accompany the effect of the parametric interaction of electromagnetic and acoustic vibrations at the water-air interface [1, 2]. In this effect, the excitation of the water surface from the side of the water by sound vibrations of frequency ƒ ₃ and the simultaneous exposure of the water surface from the side of the air by electromagnetic waves of frequency ƒ _p leads to the appearance of difference frequency components ƒ _p -ƒ ₃ in the reflected from the water surface electromagnetic waves. Such an effect can be used to transmit information from an aqueous medium through a water-air interface. The convenience of this method lies in the fact that the information transmission channel can be quickly deployed in the observation zone and, importantly, it is not necessary to lay submarine cables or use beacons on the water surface, which makes the transmission channel secretive and eliminates possible unauthorized external influences with respect to it.

In accordance with the considered concepts, the system for implementing the method of transmitting information comprises a sound emitter, which generates in the aquatic environment directed upward towards the water surface in a narrow sector, the radiation of sound vibrations with a frequency of ƒ ₃ , exciting the water surface. In this case, the radiation of sound vibrations is controlled (modeled) by information signals coming from external protection devices in the form of means for detecting underwater targets placed in the aquatic environment. A spot excited by an acoustic field on a water surface is monitored by an electromagnetic beam formed in the air.

The reflected electromagnetic waves received from the spot region are tuned to receive the frequency of modulation of electromagnetic waves in the region ƒ ₃ , the separation of which is carried out in the electronic data processing complex as transmitted information from external devices. Such information may be the parameters of the detected target: the fact of its detection, the direction of motion of the detected target, its speed, location and the number of detected targets. An electronic data processing complex may consist of a series of interconnected electronic data processing units.

The essence of the claimed information transfer system is illustrated by drawings:

FIG. 1 - the relative position of the electromagnetic transceiver and sound emitters when transmitting information;

FIG. 2 - general block diagram of the security system.

The relative position of the electromagnetic transceiver and the acoustic emitter is shown in FIG. 1, side view, where 1 is an acoustic emitter controlled by information signals from external devices, creating a narrow radiation sector towards the water surface, 2 is a spot on the water surface excited by the acoustic field of the emitter, 3 is an electromagnetic radiation channel formed in the air and receiving electromagnetic waves reflected from the water surface, 4 - electromagnetic transceiver emitting and receiving electromagnetic waves reflected from the water surface.

The proposed security system is carried out in accordance with the structural diagram shown in FIG. 2, which includes the following elements:

1 - external devices designed to detect underwater targets and obtain information about their parameters;

2 - an acoustic emitter directed towards the water surface, controlled by information signals from external devices;

3 - channel of electromagnetic radiation and reception of electromagnetic waves reflected from the water surface;

4 - an electronic complex for receiving, isolating and processing information contained in received electromagnetic waves reflected from the water surface, consisting of interconnected radio signal receiving units and displaying received information on a monitor screen.

Each of the features included in the claims is necessary, and together they are sufficient to achieve the goal, that is, essential features are included in the claims.

The proposed technical tool that transmits information about detected targets from the aqueous medium through the water-air boundary is quite simple to manufacture and low in cost, since it is limited by the function of transmitting the initial information coming from external devices, and therefore does not require complex and expensive applications any additional devices. So, in the case of embedding the proposed information transmission system in the underwater target detection system, such external devices that serve as sources of initial information for further transmission to the receiving point may be sonars, sound receivers, magnetometers, or a combination of these external devices. In such a system, the target detection function and the function of transmitting information to the receiving point about the detected target are clearly separated, which makes it possible to optimize the parameters of both parts of the system, using, for example, effective methods for detecting underwater targets regardless of the radio-acoustic channel used to transmit information or optimally solving the transmission channel to the point receiving the most complete information about detected targets.

The technical result of the present invention is to increase the reliability and effectiveness of the security system due to the possibility of its rapid deployment in the observation zone and to ensure its secrecy in difficult conditions for underwater observations and security measures in real water areas.

Information sources

1. G.Ya. Shaidurov. Potential possibilities of a parametric channel for transmitting information through a water-air interface. // Successes of modern radio electronics, No. 7, 2009, p. 41-48.

2. I.E. Ushakov, I.F. Shishkin. Radar sounding of hydroacoustic disturbances of the sea surface

Claims (1)

A system for the protection of objects from the aquatic environment with direct transmission of information about detected underwater targets through the water-air border, containing technical means for detecting underwater targets and means of transmitting information about detected targets to the receiving point, characterized in that the direct transmission of information through the water-air border based on the effect of the parametric interaction of electromagnetic and acoustic vibrations at the water-air interface, organized using an acoustic emitter at the bottom Directed toward the water surface and driven by information signals from detector underwater targets, and electromagnetic priemoizluchatelya in air, the selection information detected targets contained in the received reflected from the water surface electromagnetic vibrations, is carried out by an electronic data processing complex.

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