RU2815918C1 - Multi-position radar method - Google Patents

Abstract

FIELD: radar equipment.

SUBSTANCE: invention relates to radar equipment, namely to methods of multi-position radar location. Result is ensured by the fact that the types of aerial objects are recognized by the primary radar as part of the spaced apart equipment, information on types of air targets is transmitted to information processing point, also to information processing point from each spaced apart position information on functional diagnostics is transmitted, from the information processing point to each spaced apart position commands are sent to control their operation modes, control over operating modes of spaced apart positions and control of their functional diagnostics is carried out remotely and centrally at information processing point, wherein the operating modes of each of the spaced apart positions are optimized separately for each of the positions taking into account the combined processing of information obtained from the spaced apart equipment.

EFFECT: high efficiency of detecting aerial objects and low probability of detecting false routes due to high information content of multi-position radar in terms of identifying aerial targets.

1 cl, 1 dwg

Description

The invention relates to radar technology, namely to methods for constructing multi-position radar and can be used to construct multi-position radar systems for monitoring the authorized use of airspace.

A known method of multi-position radar [1 - RF patent No. 2332684 “Method of multi-position radar and a device for its implementation”, IPC F41H 13/00, publ. 08/27/2008], which consists in the emission of radar signals, synchronized reception of reflected signals by equipment at spaced positions, combining and joint processing of signals and information to detect targets, measure their coordinates, determine trajectory parameters and subsequent identification, while according to the invention, equipment at spaced positions positions carry out synchronized emission and reception of signals using power lines. A device for multi-position radar contains an information processing point connected by communication channels and synchronization channels with equipment of spaced positions, while the equipment of spaced positions is connected to power lines.

The disadvantage of the known method [1] is the lack of recognition of air objects, which does not allow it to be effectively used for building multi-position radar systems for monitoring the authorized use of airspace. Also, in method [1], commands to control the operating modes of each spaced position are not transmitted from the information processing point via a reverse communication channel, and information about the functional diagnostics of each spaced position is not transmitted to the processing point, which requires additional operators to operate each of the spaced positions .

There is a known method for radar surveillance of space [2 - RF patent No. 2667485 “Method for radar surveillance of space and a multi-position complex for its implementation”, IPC G01S 13/04, publ. 09/20/2018], which consists in illuminating the space using m≥2 transmitting modules (PM), receiving reflected signals using n≥2 receiving modules (RRM), determining bearings to the target and transmitting them to the information processing and control center ( TsOU), the space survey is carried out using transmitting narrowband modules (GGMu) and receiving narrowband modules (PrMu), when signs of a moving target are detected, the bearing is determined to it, its Doppler speed is measured, information is transmitted to the TsOU, using broadband modules (PrMsh) and according to the COU data, bearings are examined only in the directions where signs of a moving target are detected.

The disadvantage of the known method [2] is the lack of recognition of air objects, which does not allow it to be effectively used for building multi-position radar systems for monitoring the authorized use of airspace. Also, in method [2], commands to control the operating modes of each spaced position are not transmitted from the information processing point via the reverse communication channel, and information about the functional diagnostics of each spaced position is not transmitted to the processing point, which requires additional operators to operate each of the spaced positions .

The closest in technical essence to the invention is a method for constructing multi-position radar [3 - RF Patent No. 2770827 “Method of multi-position radar”, IPC G01S 13/00, publ. 04/22/2022], adopted as a prototype, in which, according to the method, radar signals are emitted and reflected signals are received by equipment at spaced positions, objects are detected, their coordinates are measured, and trajectory parameters are determined. In this case, the information received from the equipment of spaced positions at the information processing point is combined and jointly processed, and the received information is corrected by comparing the information received from the equipment of different spaced positions. Detection of objects, measurement of their coordinates and determination of trajectory parameters are carried out by equipment at spaced positions, the antenna systems of which use active phased array antennas. To classify air objects, information from the state identification system with AFAR and automatic dependent surveillance equipment is used. The receiving and transmitting equipment of spaced positions is placed under a radio-transparent cover and installed on elevated terrain or, if necessary, on towers. Only information about the trajectories of detected objects is transmitted to the information processing point from the equipment of spaced positions.

The disadvantages of the prototype [3] include:

- in method [3] to recognize air objects, only information from the state identification system and automatic dependent surveillance equipment is used; there is no transmission of information about the recognition of types of air objects that are not equipped with state identification equipment and automatic dependent surveillance equipment, which does not allow recognizing types of air objects , unauthorized entry into a controlled space;

- the method does not transmit commands from the information processing point via a reverse communication channel to control the operating modes of each spaced position, and also does not transmit information about the functional diagnostics of each spaced position to the processing point, which requires additional operators to operate each of the spaced positions.

The technical problem to be solved by the proposed invention is to increase the efficiency of detecting air objects and reducing the likelihood of detecting false paths by increasing the information content of multi-position radar in terms of recognizing air objects that are not equipped or deliberately do not include a system of state identification and automatic dependent surveillance during penetration into the area of authorized use of airspace.

To solve this technical problem, a multi-position radar method is proposed, in which radar signals are emitted and reflected signals are received by equipment at spaced positions. Detection of air objects, measurement of their coordinates, determination of trajectory parameters, as well as recognition of types of air objects is carried out by the primary radar as part of the equipment of spaced positions, information about the types of air objects is transmitted to the information processing point, and information about functional diagnostics, from the information processing point, commands are transmitted to each spaced position to control their operating modes, including control of carrier frequencies of radiation, control of auto-capture prohibition zones and control of parameters for detection and route tracking of air objects, and the operating modes are optimized separately for each spaced position, taking into account their mutual influence and joint processing of information received from spaced positions about the trajectories of detected air objects, information about the types of air objects and information about functional diagnostics, control of the functional diagnostics of spaced positions is carried out remotely and centrally at the information processing point.

The technical result of the invention is the possibility of constructing multi-position radar systems for monitoring the authorized use of airspace with increased information content and with a smaller number of operating personnel.

A comparative analysis of the claimed method and the prototype shows that their difference is as follows:

- in the proposed method, recognition of detected objects is carried out by the primary radar of each spaced position, while the prototype uses information from the state identification system and dependent surveillance equipment, which is not enough to recognize air objects when observing the air situation, especially in the field of combat operations and unauthorized use of airspace by unmanned aerial vehicles;

- in the proposed method, through the use of a bidirectional data transmission channel, control of the operating modes of each spaced position is ensured, as well as the receipt at the processing point of information about the functional diagnostics of each spaced position, while in the prototype, through the use of a data transmission system, only the transmission of trajectory parameters is ensured detected air objects from the equipment of each spaced position;

- in the proposed method, from the information processing point, commands are transmitted to each spaced position to control their operating modes, including control of carrier frequencies of radiation, control of auto-capture prohibition zones and control of parameters for the detection and tracking of air objects, and the operating modes are optimized separately for each spaced position with taking into account their mutual influence and joint processing of information received from spaced positions about the trajectories of detected air objects, information about the types of air objects and information about functional diagnostics, in contrast to the prototype, where joint processing of information is not used to optimize the operating modes of individual positions.

The combination of distinctive features and properties of the proposed method of multi-item review is not known from the literature, therefore it meets the criteria of “novelty” and “inventive step”.

Evidence of the possibility of implementing the multi-position radar method is given below using a specific example of an airspace control system that implements this multi-position radar method.

This representative example of the use of multi-position radar in a specific airspace control system in no way limits its scope of legal protection. This example provides only a specific illustration of the proposed implementation of a multi-position radar method in an airspace control system.

The figure shows a diagram of an airspace control system that implements this method of multi-position radar.

The system contains N spaced positions with equipment in the form of radar stations (radar) 1 and an information processing point, which is an automated workstation (AWS) of operator 2, which are connected by a bidirectional data transmission channel (DDC) 3. Each radar 1 contains a phased array antenna with radio-transparent shelter (PAR) 4, transmit-receive module (RTM) 5, reference frequency synthesizer (RF) 6, four-channel receiving module (RM) 7, signal processing and control unit (SCU) 8, which includes a functional diagnostic unit (FDU) 9, power supply system (PSS) 10.

The multi-position radar method operates as part of the device in the figure as follows.

The space is surveyed by emitting sounding signals and the reflected signals from airborne objects and the underlying surface are received and processed by the primary radar radar 1 from each spaced position, the antenna systems of which use phased array antennas. Using the BOU 8 of each of the N spaced positions, primary and secondary radar information is processed and air objects are detected, their coordinates are measured, trajectory parameters are determined, and the type of air objects is recognized. According to DCPD 3, from each spaced position to the automated workplace, 2 information processing points transmit the measured coordinates of air objects, the parameters of their trajectories and information about the type of detected air object, as well as information about the functional diagnostics of each radar 1. With the help of BFD 9 from the BOU 8 using DKPD 3 remotely and centrally perform work on recording the technical condition parameters of PAR 4, PPM5, SCh6, PM7, SEP10 from radar 1, and their serviceability. The information received from each radar 1 N spaced positions is combined and processed at the information processing point at AWS 2. From the information processing point at AWS 2, commands are transmitted to each spaced position using DCPD 3 to control their operating modes, including control of the carrier frequencies of the radiation, setting radiation prohibition zones and auto-acquisition prohibition zones and managing parameters for detecting air objects and their route tracking, and the operating modes of radar 1 are optimized separately for each spaced position, taking into account their mutual influence and joint processing of information performed on AWS 2, received from the equipment of spaced positions.

In the proposed method, recognition of air objects is used based on a set of trajectory and energy characteristics, recognition is carried out at each distributed position in radar 1 and transmitted to the information processing point (AWP 2);

In the proposed method, to eliminate mutual influence and ensure electromagnetic compatibility, centralized control from AWS 2 of the carrier frequencies of the radiation of each radar 1 is used. Frequency distribution is carried out taking into account the relative location of radar 1 at spaced positions and their sectors of responsibility, which allows to reduce mutual unintentional interference and increase the probability detection of air objects;

In the proposed method, for the timely detection of technical malfunctions of the radar 1, a BFD 9 is provided, which allows remote functional diagnostics of the radar 1 and the scope of repair work to be determined in advance; centralized control from the workstation 2 of the viewing parameters and carrier frequencies of each radar 1 is also used, which allows operating the radar without the presence of operators at separate positions and significantly reduces the cost of operating the product.

The applicant company has developed design documentation for an airspace control system that implements this method of multi-position radar, manufactured a prototype that has successfully passed tests, which allows us to conclude that it meets the “industrial applicability” criterion for the invention.

Claims (1)

A method of multi-position radar, in which radar signals are emitted and reflected signals are received by equipment at spaced positions, detecting air objects, measuring their coordinates, determining trajectory parameters, while combining and jointly processing information received from equipment at spaced positions at the information processing point, detection of air objects, measurement of their coordinates and determination of trajectory parameters is carried out by equipment at remote positions; phased array antennas are used as antenna systems for equipment at remote positions; equipment at remote positions is installed on elevated terrain, on towers or buildings, while at the point for processing information from equipment at remote locations positions, information about the trajectories of detected air objects is transmitted, characterized in that recognition of the types of air objects is carried out by the primary radar as part of the equipment of spaced positions, information about the types of air objects is transmitted to the information processing point, and information about the functional diagnostics, from the information processing point, commands are transmitted to each spaced position to control their operating modes, including control of carrier frequencies of radiation, control of auto-capture prohibition zones and control of parameters for the detection and tracking of air objects, and the operating modes are optimized separately for each spaced position, taking into account their mutual influence and joint processing of information received from spaced positions about the trajectories of detected air objects, information about the types of air objects and information about functional diagnostics, control of the functional diagnostics of spaced positions is carried out remotely and centrally at the information processing point.

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