Coast defense searching and tracking radar system and detection method thereof

Abstract

The invention provides a coast defense searching and tracking radar system. The coast defense searching and tracking radar system comprises a system central control unit, searching radar equipment, tracking radar equipment and integratable photoelectric recognition equipment, the system central control unit is used for controlling the search radar equipment and the tracking radar equipment and can expand and integrate the photoelectric identification equipment; the search radar equipment is used for searching and detecting ships in a sea area; and the tracking radar equipment adopts a two-dimensional mechanical scanning mechanism to precisely track a specified target. A protection area is detected through searching radar equipment, plot information such as the distance, the speed and the angle of a target is obtained, track information of the target can be obtained through multi-period detection, and then precise tracking of the specified target is achieved by utilizing tracking radar equipment by adjusting the orientation and pitching servo pointing. And the system can be used for guiding photoelectric equipment to identify, obtain evidences and confirm the target, so that searching, detecting, tracking, identifying and confirming of the coast defense target are integrated in one system, and the system is used for meeting market requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of perimeter security systems, and particularly to a coastal defense search and tracking radar system and its detection method. Background Art

[0002] Our country has a long coastline and rich marine resources. In the traditional mode, passive methods such as visual inspection and patrol by guard ships are used to prevent illegal fishing and collisions between fishing boats. The supervision coverage is narrow and the supervision efficiency is low. It is necessary to detect and sense with the help of advanced scientific and technological means, give early warnings to the ships sailing in the waters, establish effective emergency measures, build a round-the-clock and all-weather supervision system, and achieve unattended and remote monitoring.

[0003] Therefore, the present invention provides a coastal defense search and tracking radar system and its detection method to solve or alleviate the technical problems existing in the existing application scenarios. Summary of the Invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a coastal defense search and tracking radar system and its detection method. The coastal defense search and tracking radar system can improve the monitoring and defense capabilities of maritime security, and effectively solve the key technical problems of target search, tracking and monitoring in the coastal defense field.

[0005] In a first aspect, an embodiment of the present invention provides a coastal defense search and tracking radar system, which is characterized in that it includes a system central control unit and radar equipment;

[0006] The radar equipment includes a search radar and a tracking radar;

[0007] The system central control unit is used to control the search radar and the tracking radar, and can integrate the radar equipment into an optoelectronic identification device;

[0008] The search radar uses a four-sided array electronic scanning mechanism to search and detect a specified target in a target area, obtains point track information such as the distance, speed, and angle of the specified target, and can obtain the track information of the specified target through multi-period detection;

[0009] The tracking radar uses a two-dimensional mechanical scanning mechanism to achieve precise tracking of a specified target by adjusting the azimuth and elevation servo pointing.

[0010] Further, the system central control unit includes a digital map real-time display function and a networking function for multiple devices;

[0011] The system central control unit further includes a management function for areas with polygons, multiple quantities, and multiple attributes;

[0012] The system central control unit further includes a track drawing function.

[0013] Furthermore, the azimuth of the airspace coverage of the search radar includes within 360° and the elevation angle includes within 5° - 10°;

[0014] The airspace operating range of the search radar, when RCS = 1m 2 is more than 8 km;

[0015] The airspace operating range of the search radar, when RCS = 5m 2 is more than 10 km;

[0016] The speed measurement accuracy of the search radar is less than or equal to 0.2 m / s;

[0017] Among them, the search radar can simultaneously maintain at least 128 pieces of the specified target track information.

[0018] Furthermore, the angular tracking accuracy of the tracking radar is less than or equal to 0.3°;

[0019] The speed measurement accuracy of the tracking radar is less than or equal to 0.1 m / s;

[0020] The ranging accuracy of the tracking radar in the low-resolution mode is less than or equal to 3 m;

[0021] The ranging accuracy of the tracking radar in the high-resolution mode is less than or equal to 1 m.

[0022] Furthermore, it is characterized by including the following steps:

[0023] S1: Obtain the required information within the target area through the search radar;

[0024] S2: Make a decision on the information through the system central control unit and synchronize the decision with the tracking radar;

[0025] S3: Use the tracking radar to search the specified area and obtain the specified target information;

[0026] S4: Synchronize the specified target information to the optoelectronic recognition device;

[0027] S5: Judge whether the specified target poses a threat;

[0028] S6: Judge whether to issue an alarm instruction according to its threat level.

[0029] Furthermore, it is characterized in that the S1 includes:

[0030] S01: Use a four-sided array search radar to search and detect within the target area;

[0031] S02: Obtain the specified target point track information and track information within the target area.

[0032] Further, it is characterized in that it further includes:

[0033] S11: Collect echo data during the collection periods of the search radar and the tracking radar;

[0034] S21: Perform range image pulse compression, azimuth coherent accumulation, cfar target detection, and sum-difference beam angle measurement on the echo data;

[0035] S31: Obtain the distance, speed, and angle information of the target;

[0036] Wherein, when the search radar and the tracking radar track a specified target, the Kalman filtering algorithm is used to predict the information of the specified target, and the servo pointing angle is adjusted to achieve real-time tracking of the specified target.

[0037] Further, in S1, the information of the specified target initially obtained by the search radar includes azimuth, distance, and speed information.

[0038] In summary, the beneficial effects of the present invention are as follows:

[0039] To solve the above technical problems, an embodiment of the present invention provides a coastal defense search and tracking radar system and its detection method. The coastal defense search and tracking radar system and its detection method have the following beneficial effects:

[0040] 1. High-efficiency search and tracking capabilities: The system uses a search radar and a tracking radar for target search and tracking. Through the electronic scanning mechanism and the two-dimensional mechanical scanning mechanism, it can achieve wide airspace coverage and precise angle tracking of the target, realizing high-efficiency target search and tracking capabilities.

[0041] 2. Multifunctional system central control unit: The system central control unit has the functions of real-time display of digital maps and networking of multiple devices. It can display target information and device status in real time, and can perform area management of polygons, multiple quantities, and multiple attributes, facilitating users to manage and analyze the target area.

[0042] 3. High-precision measurement capabilities: The search radar has high-precision speed measurement and ranging capabilities. It can achieve a speed measurement accuracy of less than or equal to 0.2 m / s and a ranging accuracy of less than or equal to 1 m in different resolution modes, so as to accurately obtain information such as the speed, distance, and angle of the target.

[0043] 4. Multi-target tracking capability: The search radar can maintain the track information of at least 128 targets at the same time, use the Kalman filter algorithm to predict the target information, and achieve real-time tracking of the target by adjusting the servo pointing angle, thereby providing multi-target tracking capability.

[0044] 5. Integrated command and early warning function: The system's central control unit can make decisions based on the target information obtained through the search radar and tracking radar, and synchronize with the tracking radar to provide track drawing function. It can make judgments based on the threat level of the target and issue alarm instructions to achieve integrated command and early warning functions.

[0045] In summary, the coastal defense search and tracking radar system provides an effective coastal defense search and tracking solution through efficient search and tracking capabilities, a multi-functional system control unit, high-precision measurement capabilities, multi-target tracking capabilities, and integrated command and early warning functions, which improves the efficiency and accuracy of search and target tracking in the coastal defense field and is beneficial to ensuring maritime security.

[0046] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required for use in the embodiment of the present invention will be briefly introduced below. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the present invention.

[0048] Figure 1 It is a schematic diagram of the process of the present invention;

[0049] Figure 2 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described in conjunction with the drawings in the embodiment of the present invention. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In the absence of further restrictions, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements. If there is no conflict, the various features in the embodiments and examples of the present invention can be combined with each other, all within the scope of protection of the present invention.

[0051] Example 1

[0052] See also Figure 1 and Figure 2 , an embodiment of the present invention provides a coastal defense search and tracking radar system, characterized in that it includes a system control unit and a radar device;

[0053] The radar equipment includes a search radar and a tracking radar;

[0054] The system control unit is used to control the search radar and tracking radar, and can expand and integrate the radar equipment into an optoelectronic recognition device;

[0055] The search radar, tracking radar, and optoelectronic identification equipment are all connected to the system control unit;

[0056] The search radar uses a four-sided array electronic scanning mechanism to search and detect the designated target in the target area, obtain the distance, speed, angle and other point information of the designated target, and can obtain the track information of the designated target through multi-cycle detection;

[0057] The tracking radar adopts a two-dimensional mechanical scanning mechanism and precisely tracks a specified target by adjusting the azimuth and elevation servo pointing.

[0058] Furthermore, the central control unit of the system includes a real-time digital map display function and a networking function for multiple devices;

[0059] The central control unit of the system also includes a management function for areas with polygons, multiple quantities, and multiple attributes;

[0060] The central control unit of the system also includes a track plotting function.

[0061] Furthermore, the airspace coverage azimuth of the search radar includes within 360° and the elevation angle includes within 5° - 10°;

[0062] The airspace operating range of the search radar at RCS = 1m 2 is above 8 km;

[0063] The airspace operating range of the search radar at RCS = 5m 2 is above 10 km;

[0064] The speed measurement accuracy of the search radar is less than or equal to 0.2 m / s;

[0065] Among them, the search radar can simultaneously maintain at least 128 pieces of the specified target track information.

[0066] Specifically, the airspace coverage azimuth of the search radar is 360°, the elevation is 8°, the operating range is ≥8 km (RCS = 1m2), ≥10 km (RCS = 5m2), the speed measurement accuracy is ≤0.2 m / s, the ranging accuracy is better than 10 m, and it can simultaneously maintain up to 128 pieces of target track information.

[0067] Furthermore, the angular tracking accuracy of the tracking radar is less than or equal to 0.3°;

[0068] The speed measurement accuracy of the tracking radar is less than or equal to 0.1 m / s;

[0069] The ranging accuracy of the tracking radar in the low-resolution mode is less than or equal to 3 m;

[0070] The ranging accuracy of the tracking radar in the high-resolution mode is less than or equal to 1 m.

[0071] Specifically, the angular tracking accuracy of the tracking radar device is ≤0.3°, the speed measurement accuracy is ≤0.1 m / s, and the ranging accuracy is ≤3 m (low-resolution mode), ≤1 m (high-resolution mode).

[0072] Specifically, the integrated optoelectronic identification device also includes transmitting video signals to provide video signals for staff members and acquiring and processing their video information.

[0073] Furthermore, it is characterized by including the following steps:

[0074] S1: Obtain the required information within the target area through the search radar;

[0075] The search radar uses a four-sided array search radar device to search and detect within a preset area, and obtain target point track information and track information within the area; specifically, search and detect the protected sea area to obtain information on ships moving on the sea surface within the protected sea area. The ships include cargo ships, passenger ships, fishing boats, warships, etc., which drive the hull to move on the water surface by fuel or other energy sources to drive the engine.

[0076] S2: Make a decision on the information through the system central control unit and synchronize the decision with the tracking radar;

[0077] When the search radar detects a specified target, after decision-making and processing by the system central control unit, send the specified target position to the tracking radar device;

[0078] S3: Use the tracking radar to search the specified area and obtain specified target information;

[0079] The tracking radar performs capture search according to the specified position of the specified target. After successful capture, it performs real-time tracking on the specified target. If the capture fails, it searches for the target again;

[0080] S4: Synchronize the specified target information to the optoelectronic identification device;

[0081] When the search radar discovers a target, it can transmit the target information to the optoelectronic identification device through the system central control unit at the same time;

[0082] S5: Determine whether the specified target poses a threat;

[0083] Through the video information converted by the optoelectronic identification device, manually confirm whether the specified target poses a threat and whether it is an intrusion target;

[0084] S6: Determine whether to issue an alarm instruction according to its threat level.

[0085] When it is manually confirmed that the specified target poses a threat or is an intrusion target, send a signal to notify the established staff of this information and handle it;

[0086] Furthermore, it is characterized in that S1 includes:

[0087] S01: Search and detect the target area using a four-sided array search radar;

[0088] S02: Obtain the specified target point track information and track information within the target area.

[0089] Further, it is characterized in that it further includes:

[0090] S11: Collect echo data during the acquisition periods of the search radar and the tracking radar;

[0091] S21: Perform range image pulse compression, azimuth coherent integration, cfar target detection, and sum-difference beam angle measurement on the echo data;

[0092] S31: Obtain the range, velocity, and angle information of the target;

[0093] Among them, when tracking the specified target, the search radar and the tracking radar use the Kalman filtering algorithm to predict the information of the specified target, and adjust the servo pointing angle to achieve real-time tracking of the specified target.

[0094] Further, in S1, the information of the specified target initially obtained by the search radar includes azimuth, range, and velocity information; after the search radar initially obtains the azimuth, range, and velocity information of the specified target, the tracking radar only needs to perform precise search within a small range centered on this azimuth, and can also achieve rapid locking of the target.

[0095] Embodiment 2

[0096] Please refer to Figure 1 and Figure 2, embodiments of the present invention provide a coastal defense search and tracking radar system and its detection method. When the system in the present invention works, it first uses the search radar to detect the sea area or water area environment within the protection area by using a four-sided array antenna, obtains the target echo signals of ships within the area, calculates the distance value and speed value of the target by using the range channel number and Doppler channel number detected from the sum-channel echo data, calculates the deviation angle of the target by using the echo data of the sum-difference channels, and then makes a decision by the system central control unit according to information such as preset warning areas, target tracks or threat levels, synchronizes the azimuth where the target appears to the tracking radar, and then the tracking radar conducts capture search on the specified azimuth. If the information such as the speed and distance of the target is successfully matched through data comparison, it transfers to locked tracking and adjusts the servo pointing to conduct real-time tracking on the target. After the tracking radar successfully captures the target, the target information can be transmitted to the optoelectronic identification device through the system central control unit, and then the optoelectronic identification device collects images within the specified area to facilitate manual confirmation of whether it is an intrusion target and notifies the staff for handling. Furthermore, the detection, tracking, identification, confirmation, and evidence collection of ships are concentrated in one system to meet the market demand.

[0097] According to the above content, the coastal defense search and tracking radar system and its detection method have the following beneficial effects:

[0098] 1. High-efficiency search and tracking capabilities: The system uses the search radar and tracking radar for target search and tracking. Through the electronic scanning mechanism and two-dimensional mechanical scanning mechanism, it can achieve wide airspace coverage of the target and precise angle tracking, realizing high-efficiency target search and tracking capabilities.

[0099] 2. Multifunctional system central control unit: The system central control unit has the functions of real-time display of digital maps and networking of multiple devices, can display target information and device status in real time, and can conduct area management of polygons, multiple quantities, and multiple attributes, facilitating users to manage and analyze the target area.

[0100] 3. High-precision measurement capabilities: The search radar has high-precision speed measurement and ranging capabilities. In different resolution modes, it can achieve a speed measurement accuracy of less than or equal to 0.2 m / s and a ranging accuracy of less than or equal to 1 m, so as to accurately obtain information such as the speed, distance, and angle of the target.

[0101] 4. Multi-target tracking capabilities: The search radar can simultaneously maintain at least 128 target track information, predict target information by using the Kalman filtering algorithm, and achieve real-time tracking of the target by adjusting the servo pointing angle, thus providing the ability of multi-target tracking.

[0102] 5. Integrated Command and Early Warning Function: The system's central control unit can make decisions on the target information obtained through the search radar and tracking radar, synchronize with the tracking radar, provide the function of track plotting, be able to judge according to the threat level of the target, and issue alarm instructions to achieve the integrated command and early warning function.

[0103] In summary, the coastal defense search and tracking radar system provides an effective solution for coastal defense search and tracking through its efficient search and tracking capabilities, multi-functional system central control unit, high-precision measurement capabilities, multi-target tracking capabilities, and integrated command and early warning functions, improving the efficiency and accuracy of search and target tracking in the coastal defense field and contributing to ensuring maritime safety.

[0104] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, terms such as "installed", "equipped with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A coastal defense search and tracking radar system, characterized in that, it includes a system central control unit and radar equipment; the radar equipment includes a search radar and a tracking radar; the system central control unit is used to control the search radar and the tracking radar, and can integrate the radar equipment into an optoelectronic identification device; the search radar uses a four-sided array electronic scanning mechanism to search and detect specified targets in the target area, obtains point track information such as the distance, speed, and angle of the specified targets, and can obtain the track information of the specified targets through multi-period detection; the tracking radar uses a two-dimensional mechanical scanning mechanism to achieve precise tracking of specified targets by adjusting the azimuth and elevation servo pointing.

2. The coastal defense search and tracking radar system according to claim 1, characterized in that, the system central control unit includes a digital map real-time display function and a networking function for multiple devices; the system central control unit also includes a management function for areas with polygons, multiple quantities, and multiple attributes; the system central control unit also includes a track drawing function.

3. The coastal defense search and tracking radar system according to claim 1, characterized in that, the airspace coverage azimuth of the search radar includes within 360°, and the elevation angle includes within 5° - 10°; The airspace operating range of the search radar is above 8 km when RCS = 1 m 2 ; The airspace operating range of the search radar is at RCS = 5m 2 when it includes over 10 km; the speed measurement accuracy of the search radar includes less than or equal to 0.2 m / s; wherein, the search radar can simultaneously maintain at least 128 pieces of the specified target track information.

4. The coastal defense search and tracking radar system according to claim 1, characterized in that, the angle tracking accuracy of the tracking radar includes less than or equal to 0.3°; the speed measurement accuracy of the tracking radar includes less than or equal to 0.1 m / s; the ranging accuracy of the tracking radar in the low-resolution mode includes less than or equal to 3 m; the ranging accuracy of the tracking radar in the high-resolution mode includes less than or equal to 1 m.

5. The detection method of the coastal defense search and tracking radar system according to claims 1 to 4, characterized in that, it includes the following steps: S1: Obtain the required information within the target area through the search radar; S2: Make a decision on the information through the system central control unit and synchronize the decision with the tracking radar; S3: Use the tracking radar to search the specified area and obtain specified target information; S4: Synchronize the specified target information to the optoelectronic identification device; S5: Judge whether the specified target poses a threat; S5: Judge whether to issue an alarm instruction according to its threat level.

6. The detection method of the coastal defense search and tracking radar system according to claim 1, characterized in that, the S1 includes: S01: Use a four-sided array search radar to search and detect within the target area; S02: Obtain the specified target point track information and track information within the target area.

7. The detection method of the coastal defense search and tracking radar system according to claims 5 and 6, characterized in that, it further includes: S11: Collect echo data of the acquisition period through the search radar and the tracking radar; S21: Perform range image pulse compression, azimuth coherent accumulation, cfar target detection, and sum-difference beam angle measurement on the echo data; S31: Obtaining the distance, speed and angle information of the target; Wherein, the search radar and the tracking radar use the Kalman filter algorithm to predict the information of the designated target when tracking the designated target, and adjust the servo pointing angle to achieve real-time tracking of the designated target.

8. The detection method of the coastal defense search and tracking radar system according to claim 5, It is characterized in that In S1, the information of the designated target initially obtained by the search radar includes the information of direction, distance and speed.

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