System Introduction

As a kind of high-tech equipment which employs electromagnetic wave signal to detect the moving targets, Radar is a kind of active all-weather warning detection means. It can warn by detectingany people and vehicles in the specified areas, and give warnings according to their intention.The system has the following characteristics:

• Itcould monitor human, vehicles and large animals;
• It couldautomatically guide and control the infrared and photoelectric devices to compose a linkage system, which will not only provide 24-hour continuous warning and monitoringin the assigned area, and also fulfill the function of target recognition and management;
• The systemwill automatically track,identify the threat level and give an alarm. It is also compatible with manual intervention mode;
• With the hierarchical network structure, the command control center at the upper level can observe and govern the comprehensive information in the whole region, and form a security situation map of the whole region.
• With corresponding data storage and playback functions at all levels, this system could storethe targets’ movement track or state information for post review and verification;
• With self-checking function, the system couldtest and monitorthe health condition of devices in the system. A prompt will be given in the case of any equipment failures. If the malfunctioning equipment is the network center, the system will automatically generate a new network center to ensure the system reliability.

System Composition

The radar warning system is an intelligent networked monitoring system composed of multi-level network structure. Its network can be expanded freely as needed. The front end of the network is the radar sensors. The data from several radar sensors are gathered at the processing and control center, which is the first level of the network. The processing and control center will process and comprehensively analyze the data from all the sensors on the first level to generate station-level comprehensive information. This center will report the summarized information to its superior command and control center, the county command and control center, for instance, who could report the overall condition to its superior command and control center, such as the district command and control center, if necessary. Then the district command and control center will analyze the summarized information from the county center and then form a comprehensive warning situation map of the whole region.

In the whole system, the radar sensor is the source of the information and at the front end of the network. As the center of sensor data processing, photoelectric fusion processing and control, the processing and control center will automatically process all sensor data, generate radar warning information, and automatically guide the photoelectric equipment to grab the target videos and images. The follow-up command and control centers will separately summarize the information gathered from respective governed regions and form an overall situation map of the region, so as to provide the commander with real-time situation information for decision-making.

Except the specialized radar, the hardware of the processing and control center can be constructed with general industrial computer, as all the functions could be realized by installing the software related to sensor data processing, photoelectric fusion processing and control in the computer. The general industrial computer may also be adopted for the hardware equipment of the command and control centers at all levels, if the computer is installed with the corresponding comprehensive situation analysis software to realize its functions. The list of system components, as shown in below table, exclude photoelectric equipment, industrial computers, communication equipment and other equipment that are not part of the radar warning system.

System Components

• With multi-task ability, it can track while detecting;
• It can effectively counter human’s intentional elusion;
• With high data rate, it could discover target more immediately;
• Without mechanical transmission components, it is very reliable.

Combination of Radar and Photoelectronics

The combination of radar and optoelectronic equipment enables the automatic processing, from early warning to recognition, which will greatly reduce labor intensity of the soldiers on duty.

The radar detects the targets in the mission area ceaselessly from day to night and gets preliminary threat recognition based on the target's movement behavior. The radar will continuously detect and track the unthreatening targets and regularly evaluate the threat level. If the target is with potential threats, the radar will immediately guide the photoelectric equipment to aim at the target, adjust the focal length of the photoelectric equipment according to the distance from the target, maintain photoelectric equipment irradiate and track the targets in a certain period of time, in order to obtain the clear video images of the targets. The photoelectric equipment delivers the obtained video information to the processing and control center, where the video processing software will carry on precise recognition. After successful recognition, the radar will release the photoelectric equipment. But if the recognition is not fulfilled within the time limit, the system will prompt a request for artificial identification, and the operator will decide whether or not to continue guiding and controlling the photoelectric equipment. After the recognition is fulfilled, the obtained target properties, such as type, quantity and so forth, will be sent to the fusion processing software, which will combine the radar and photoelectric information to judge the threat level and give appropriate warning signals.

System radar operating principle

The radar mainly targets the Doppler shift of the target, and the target is up to 180 kilometers per hour. Such as buildings, trees, or the terrain effects on vision and limits, need to use more than one radar networking, each view blind area, the formation of target motion trajectory in a row, all the radar target track plotting on the GIS map, presents an intuitive state information display.

The radar adopts the phase correlation and continuous wave system, combined with the unique algorithm, greatly improves the noise suppression ability and the detection ability of low speed small target. Through the target analysis, filter the jamming signal, improve the target accuracy and reduce the target error rate. While ensuring that small target detection capability is ensured, the emission power will be lowered to the lowest level, which will not be harmful to the human body.

AR-500 solid coherent Doppler radar coverage is in front to the ±45°covered with electronic scan quadrant area, about 3 million square meters surveillance area by single radar. The target detection maximum range is, the pedestrian 800 meters, the Car 1200 meters, the large vehicle 2000 meters.

Technical Index

Technical Index of the Radar

Aviation connector type: Y50P-1412ZJ10L2; mating connector: Y50P-1412TK1L2-12.5

Photoelectric Technical Index

As the general video sensors could be used as the photoelectric part, the following sensors are recommended for this system:

The photoelectric system may be assembled according to the user's requirements. The technical indicators are as follows (compatible with the yuntai control of Hiklife/Dahua/Uniview):

System Features

High integration

This highly integrated system adopts multi-mode compound system, incorporating radar, infrared and visible light devices, and integrating functions such as searching warning, infrared and visible light monitoring and identification, etc.

Good operability

Through multi-screen monitoring for infrared video, visible light video, radar track and other information, the operations such as system monitoring, manual tracking and investigation could be completed by only one person.

Multi-target detection and integrating ability

This system consists of radar, infrared and visible light detections. The radar can detectno less than 100 targets at the same time. By detecting with infrared and visible light measure, it is possible to automatically track and obtain evidence of multiple targets in the covered area. The system has good capability of data fusion;

Unattended automatic monitoring

This highly integrated system can automatically monitor and record without operators, which mean it can upload real-time information, includinginfrared/visible light videos and radar track, to the command center. The operator can also intervene in the command center and remotely operate the monitoring platform.

Deployment Scheme of Radar Sensors

To improve the overall costperformance and practicability of the radar warning system, it is necessary to configurea variety of radar sensors with different specifications and optimize the configuration according to the actual terrain conditions. Based on the specific deployment scheme of the barracks, we mainly provide 90°, 180°, 270°and 360° scanning justcustomized as per users’ requirements, detecting the humanwithin the distance of 1500 meters and the vehicles within the distance of 3000 meters,.

• L401 (1 primary radar) to achieve 90° electric scanning;
• L421 (1 primary radar /1 secondary radar) to achieve 180°electric scanning;
• L431 (1 primary radar /2 secondary radars) to achieve 270°electric scanning;
• L441 (1 primary radar /3 secondary radars) to achieve 360°electric scanning;

Preliminary configuration scheme for various terrain conditions

Typical Application Cases of Phased Array Radar

Our phased array radar has been deployed in various and complex environments, especially in those areas with extremely complicated climate conditions, such as the border areas and the submarine cable protection zones.

Application Cases in Border Defense

Application Examples in CoastDefense