Wide-elevation-angle multi-dimensional scanning method of planar phased array weather radar

Abstract

The embodiment of the invention provides a wide-elevation-angle multi-dimensional scanning method of a planar phased array weather radar. The method is applied to weather radar scanning. The method comprises the following steps: determining an elevation stepping interval of vertical mechanical scanning according to a preset narrowest beam width of vertical electronic scanning; vertical mechanical scanning is carried out from a preset initial angle according to an elevation angle stepping interval, and PPI mode scanning is carried out every time vertical mechanical scanning is completed; and repeating the vertical mechanical scanning operation and the PPI mode scanning operation until the elevation angle of the vertical mechanical scanning reaches a preset end angle. In this way, the flexibility of normal pointing in the vertical direction can be improved, and the elevation angle detection range can be increased.

Description

Technical Field

[0001] The present disclosure relates to the field of weather radar scanning, and particularly to a wide elevation multi-dimensional scanning method for a planar phased array weather radar. Background Art

[0002] As an important tool for modern meteorological observations, one-dimensional phased array weather radars are designed to efficiently obtain meteorological information in the atmosphere. Such radars typically detect targets by combining horizontal mechanical scanning and vertical electrical scanning. Although this scanning method can obtain meteorological data within a certain range, the elevation angle range is usually limited between 0 and 20 degrees, which to a certain extent limits the radar's observation ability.

[0003] For some specific weather scenarios, such as the verification of the small rain method, which is a method for measuring precipitation, it requires the radar to be able to observe the distribution of precipitation particles and precipitation intensity at different elevation angles. In the case of low precipitation intensity or uneven distribution of precipitation particles, if the radar cannot observe at an appropriate elevation angle, it cannot capture all relevant meteorological information, thus affecting the accurate measurement of precipitation; for another example, when monitoring extreme weather phenomena such as severe convective weather, tornadoes, and hailstorms, the radar needs to quickly adjust the scanning method to capture the detailed characteristics and evolution process of these weather phenomena. All of the above weather phenomena require the radar to have a wider elevation angle range to obtain more comprehensive meteorological information. Due to the limitations of the existing scanning method, the radar cannot provide sufficient observation flexibility and accuracy in these situations. Summary of the Invention

[0004] The present disclosure provides a wide elevation multi-dimensional scanning method, device, equipment, and storage medium for a planar phased array weather radar.

[0005] According to a first aspect of the present disclosure, there is provided a wide elevation multi-dimensional scanning method for a planar phased array weather radar. The method includes:

[0006] Determine the elevation step interval of vertical mechanical scanning according to the preset narrowest beam width of vertical electronic scanning;

[0007] Perform vertical mechanical scanning from a preset initial angle at the elevation step interval, and perform a PPI mode scan every time a vertical mechanical scan is completed;

[0008] Repeat the operations of vertical mechanical scanning and PPI mode scanning until the elevation angle of vertical mechanical scanning reaches a preset end angle.

[0009] In some realizable ways of the first aspect, the performing vertical mechanical scanning from a preset initial angle at the elevation step interval includes:

[0010] The array antenna in the control plane phased array weather radar starts from a preset initial angle and rotates step by step at an elevation step interval in the vertical direction for vertical mechanical scanning. Each time vertical mechanical scanning is performed, the rotation angle of the array antenna increases by an elevation step interval based on the rotation angle of the array antenna during the previous vertical mechanical scanning.

[0011] In some realizable ways of the first aspect, the PPI mode scanning includes:

[0012] Vertical electronic scanning and horizontal mechanical scanning.

[0013] In some realizable ways of the first aspect, the preset end angle is determined by the following method:

[0014] According to the detection requirements and the elevation angle range of the vertical electronic scanning, the preset end angle is determined.

[0015] In some realizable ways of the first aspect, the vertical electronic scanning and the horizontal mechanical scanning are performed by the following method:

[0016] Change the phases of the antenna elements on the array antenna in the plane phased array weather radar to perform vertical electronic scanning, and then / before / at the same time, perform 360-degree horizontal mechanical scanning in the horizontal direction.

[0017] In some realizable ways of the first aspect, the 360-degree horizontal mechanical scanning in the horizontal direction includes:

[0018] During the process of performing horizontal mechanical scanning, the plane phased array weather radar emits beams to the airspace within a 360° range in the horizontal direction and receives echo signals from the detection targets.

[0019] According to the second aspect of the present disclosure, a wide elevation angle multi-dimensional scanning device for a plane phased array weather radar is provided. The device includes:

[0020] An elevation step interval determination module, configured to determine the elevation step interval of the vertical mechanical scanning according to the preset narrowest beam width of the vertical electronic scanning;

[0021] A scanning control module, configured to start from a preset initial angle and perform vertical mechanical scanning at an elevation step interval. Each time a vertical mechanical scanning is completed, a PPI mode scanning is performed; the operations of vertical mechanical scanning and PPI mode scanning are repeated until the elevation angle of the vertical mechanical scanning reaches the preset end angle.

[0022] According to a third aspect of the present disclosure, an electronic device is provided. The electronic device includes: at least one processor; and a memory communicatively connected to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the method as described above.

[0023] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, and the computer instructions are used to cause a computer to execute the method as described above.

[0024] In the present disclosure, according to a preset narrowest beam width of vertical electronic scanning, an elevation step interval of vertical mechanical scanning is determined; starting from a preset initial angle, vertical mechanical scanning is performed according to the elevation step interval, and each time a vertical mechanical scanning is completed, a PPI mode scanning is performed; the operations of vertical mechanical scanning and PPI mode scanning are repeated until the elevation angle of the vertical mechanical scanning reaches a preset end angle. In this way, the flexibility of the normal direction in the vertical direction can be improved and the elevation detection range can be increased.

[0025] It should be understood that the content described in the summary of the invention section is not intended to limit the key or important features of the embodiments of the present disclosure, nor to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In combination with the drawings and with reference to the following detailed description, the above and other features, advantages, and aspects of the embodiments of the present disclosure will become more apparent. The drawings are used to better understand the solution and do not constitute a limitation to the present disclosure. In the drawings, the same or similar reference numerals represent the same or similar elements, where:

[0027] Figure 1 FIG. shows a flowchart of a wide elevation multi-dimensional scanning method of a planar phased array weather radar provided by an embodiment of the present disclosure;

[0028] Figure 2 FIG. shows a structural diagram of a wide elevation multi-dimensional scanning device of a planar phased array weather radar provided by an embodiment of the present disclosure;

[0029] Figure 3 FIG. shows a structural diagram of an exemplary electronic device capable of implementing the embodiments of the present disclosure. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0031] In addition, the term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0032] In response to the problems in the background art, the embodiments of the present disclosure provide a wide elevation multi-dimensional scanning method and device for a planar phased array weather radar. Specifically, according to the preset narrowest beam width of vertical electronic scanning, the elevation step interval of vertical mechanical scanning is determined; starting from the preset initial angle, vertical mechanical scanning is performed at the elevation step interval, and each time a vertical mechanical scanning is completed, a PPI mode scanning is performed; the operations of vertical mechanical scanning and PPI mode scanning are repeated until the elevation angle of the vertical mechanical scanning reaches the preset end angle. In this way, the flexibility of the normal direction in the vertical direction can be improved and the elevation detection range can be increased.

[0033] The following will, with reference to the accompanying drawings, describe in detail the wide elevation multi-dimensional scanning method and device for a planar phased array weather radar provided by the embodiments of the present disclosure through specific embodiments.

[0034] Figure 1 The flowchart of a wide elevation multi-dimensional scanning method for a planar phased array weather radar provided by the embodiments of the present disclosure is shown. Method 100 includes the following steps:

[0035] S110, according to the preset narrowest beam width of vertical electronic scanning, determine the elevation step interval of vertical mechanical scanning.

[0036] In some embodiments, the elevation step interval is the same as the preset narrowest beam width, both set to 1 o .

[0037] S120, starting from the preset initial angle, perform vertical mechanical scanning at the elevation step interval, and each time a vertical mechanical scanning is completed, perform a PPI mode scanning.

[0038] In some embodiments, when performing vertical mechanical scanning, no scanning is performed in the horizontal direction.

[0039] In some embodiments, the PPI mode scanning includes:

[0040] Vertical electronic scanning and horizontal mechanical scanning.

[0041] In some embodiments, before the first vertical mechanical scanning and PPI mode scanning, scanning parameters need to be set according to detection requirements; among them,

[0042] The scanning parameters include beam dwell time, radar operating frequency, pulse repetition frequency, pulse width, pulse length, horizontal mechanical scanning speed, and vertical mechanical scanning speed.

[0043] In some embodiments, starting from a preset initial angle and performing vertical mechanical scanning at elevation step intervals includes:

[0044] Controlling the array antenna in the planar phased array weather radar to gradually rotate in the vertical direction from the preset initial angle at elevation step intervals for vertical mechanical scanning. Each time vertical mechanical scanning is performed, the rotation angle of the array antenna increases by one elevation step interval based on the rotation angle of the array antenna during the previous vertical mechanical scanning. For example, if the preset initial angle is set to 0 degrees, the array antenna is first placed in the vertical direction according to the preset initial angle and vertical mechanical scanning is performed. After the first round of vertical mechanical scanning and PPI mode scanning, if no target is detected, the second round of vertical mechanical scanning and PPI mode scanning is performed, that is, the entire array antenna is rotated by 1 degree and vertical mechanical scanning is performed. After this vertical mechanical scanning is completed, a PPI mode scanning is performed. If no target is detected in the second round of scanning, the third round of scanning is performed, that is, on the basis of the second round of vertical mechanical scanning, the entire array antenna is rotated by 1 degree again and vertical mechanical scanning is performed. After this vertical mechanical scanning is completed, a PPI mode scanning is performed again. Repeat the vertical mechanical scanning and PPI mode scanning operations in the above manner until a target is detected (i.e., the elevation angle of the vertical mechanical scanning reaches the preset end angle).

[0045] In some embodiments, the vertical electronic scanning and horizontal mechanical scanning are performed in the following manner:

[0046] Changing the phases of the antenna elements on the array antenna in the planar phased array weather radar to perform vertical electronic scanning, and then / before / at the same time, performing 360-degree horizontal mechanical scanning in the horizontal direction.

[0047] In some embodiments, performing 360-degree horizontal mechanical scanning in the horizontal direction includes:

[0048] During the process of performing horizontal mechanical scanning, the planar phased array weather radar emits beams into the airspace within 360° in the horizontal direction and receives echo signals from the detection target.

[0049] In some embodiments, when performing a PPI mode scan, for cases where comprehensive weather events need to be detected, vertical electronic scanning can be performed first followed by horizontal mechanical scanning. High-resolution data on the vertical structure of the atmosphere, such as the vertical distribution of temperature, humidity, wind speed, and wind direction, can be obtained through vertical electronic scanning. Then, the evolution of weather in the horizontal direction, such as the movement of fronts and the formation of cyclones, can be obtained through horizontal mechanical scanning.

[0050] For cases where multiple target areas need to be detected simultaneously, horizontal mechanical scanning can be used to quickly identify which areas have potential risks and prioritize these potential risks. For areas with high priority, vertical electronic scanning is preferentially performed to obtain detailed information in the vertical direction of these areas. For example, for extreme weather conditions such as typhoons and heavy rains, the affected areas are first identified through horizontal mechanical scanning, and then vertical electronic scanning is performed on these areas to obtain information such as wind speed, wind direction, and precipitation in these areas.

[0051] For weather events that require continuous monitoring of a large area, especially those that require long-term and high-precision observations, vertical electronic scanning and horizontal mechanical scanning can be performed simultaneously. For example, severe convective weather events, sandstorm weather events, etc.

[0052] S130, repeat the vertical mechanical scanning and PPI mode scanning operations until the elevation angle of the vertical mechanical scanning reaches a preset end angle.

[0053] In some embodiments, the preset end angle is determined in the following manner:

[0054] Based on the detection requirements and the elevation angle range of the vertical electronic scanning, the preset end angle is determined. For example, if the elevation angle corresponding to the detection target is 80 degrees and the elevation angle range of the vertical electronic scanning is 0 - 35 degrees, then the preset end angle should be set to 45 degrees. When the array antenna performs vertical mechanical scanning in the vertical direction at a certain rotation angle (if the preset initial angle is 0 degrees, this rotation angle is the same as the preset end angle, both 45 degrees), when the elevation angle formed by the vertical mechanical scanning reaches 45 degrees, only one more vertical electronic scanning in the vertical direction and one horizontal mechanical scanning in the horizontal direction are needed to detect the detection target.

[0055] In some embodiments, method 100 achieves wide elevation angle detection according to different detection requirements, with the elevation angle range covering 0 - 90 degrees and the azimuth angle in the horizontal direction covering 0 - 360 degrees, greatly improving the target detection range in the field of one-dimensional phased array weather radar and enhancing the flexibility of the normal direction in the vertical direction. This method is applicable to the detection of low-altitude weather events such as fog and haze, as well as high-altitude weather events such as jet streams, high clouds, and meteor showers, with a wider applicable range.

[0056] The above is an introduction to the method embodiments. The following further illustrates the solution of the present disclosure through specific embodiments adopting this method.

[0057] Taking the elevation step interval as 1 degree, the preset initial angle as 0 degree (i.e., the plane of the array antenna is placed horizontally), and the elevation range of vertical electronic scanning as 0 - 60 degrees for detecting severe convective weather events as an example, the array antenna first performs vertical mechanical scanning at the preset initial angle. When performing vertical mechanical scanning, no scanning operation is carried out in the horizontal direction. After completing the first vertical mechanical scanning, the current vertical mechanical scanning device is statically locked, and vertical electronic scanning and horizontal mechanical scanning are performed. If no severe convective weather event is detected, the static lock on the vertical mechanical scanning device is released. On the basis of the angle rotated by the array antenna during the previous vertical mechanical scanning, the array antenna is rotated as a whole by 1 degree for vertical mechanical scanning. After this vertical mechanical scanning is completed, the current vertical mechanical scanning device is statically locked, and vertical electronic scanning and horizontal mechanical scanning are performed. If no severe convective weather event is still detected, the static lock on the vertical mechanical scanning device is released, and the scanning operation is repeated according to the above second scanning process until a severe convective weather event is detected. Suppose the elevation angle when the severe convective weather event occurs is 80 degrees, and the maximum elevation angle of vertical electronic scanning is 60 degrees. Therefore, at least 20 degrees of elevation angle needs to be formed through vertical mechanical scanning to detect the severe convective weather event in the vertical direction. Since the preset initial angle of the array antenna is 0 degree, the array antenna rotated as a whole by 20 degrees for vertical mechanical scanning can form an elevation angle of 20 degrees (if the preset initial angle of the array antenna is not 0 degree, the elevation angle formed by the array antenna rotated as a whole by 20 degrees for vertical mechanical scanning is not 20 degrees, and at this time, the elevation angle of vertical mechanical scanning needs to be recalculated), that is, the preset end angle is set to 20 degrees. At this time, vertical electronic scanning is performed again to form an elevation angle of 80 degrees, so as to detect the severe convective weather event in the vertical direction. Combining with horizontal mechanical scanning, the meteorological information in the coverage area of the severe convective weather event is detected.

[0058] According to the embodiments of the present disclosure, the elevation step interval of vertical mechanical scanning is determined according to the preset narrowest beam width of vertical electronic scanning; starting from the preset initial angle, vertical mechanical scanning is performed at the elevation step interval, and after each vertical mechanical scanning is completed, a PPI mode scanning is performed; the operations of vertical mechanical scanning and PPI mode scanning are repeated until the elevation angle of vertical mechanical scanning reaches the preset end angle. In this way, the flexibility of the normal direction in the vertical direction can be improved and the elevation detection range can be increased.

[0059] It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present disclosure is not limited by the described action sequence, because according to the present disclosure, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to the present disclosure.

[0060] The above is the introduction to the method embodiments. The following further illustrates the solution of the present disclosure through device embodiments.

[0061] Figure 2 The structural diagram of a wide elevation multi-dimensional scanning device for a planar phased array weather radar provided by an embodiment of the present disclosure is shown. The device 200 includes:

[0062] An elevation step interval determination module 210, configured to determine the elevation step interval of the vertical mechanical scan according to the preset narrowest beam width of the vertical electronic scan.

[0063] A scan control module 220, configured to perform vertical mechanical scans starting from a preset initial angle at the elevation step interval, and perform a PPI mode scan each time a vertical mechanical scan is completed; repeat the operations of vertical mechanical scans and PPI mode scans until the elevation angle of the vertical mechanical scan reaches a preset end angle.

[0064] In some embodiments, the scan control module 220 is specifically configured to:

[0065] The performing vertical mechanical scans starting from a preset initial angle at the elevation step interval includes:

[0066] Controlling the array antenna in the planar phased array weather radar to gradually rotate in the vertical direction starting from the preset initial angle at the elevation step interval to perform vertical mechanical scans. Each time a vertical mechanical scan is performed, the rotation angle of the array antenna increases by an elevation step interval based on the rotation angle of the array antenna during the previous vertical mechanical scan.

[0067] In some embodiments, the scan control module 220 is specifically further configured to:

[0068] The PPI mode scan includes:

[0069] Vertical electronic scan and horizontal mechanical scan.

[0070] In some embodiments, the scan control module 220 is specifically further configured to:

[0071] The vertical electronic scan and the horizontal mechanical scan are performed in the following manner:

[0072] Change the phase of each antenna element on the array antenna in the planar phased array weather radar to perform vertical electronic scanning, and then / before / while performing 360-degree horizontal mechanical scanning in the horizontal direction.

[0073] In some embodiments, the scan control module 220 is further specifically configured to:

[0074] The 360-degree horizontal mechanical scanning in the horizontal direction includes:

[0075] During the process of performing horizontal mechanical scanning, the planar phased array weather radar emits a beam to the airspace within 360° in the horizontal direction and receives the echo signal from the detection target.

[0076] In some embodiments, the scan control module 220 is further specifically configured to:

[0077] The preset end angle is determined by the following method:

[0078] Determine the preset end angle according to the detection requirements and the elevation angle range of the vertical electronic scanning.

[0079] It can be understood that Figure 2 Each module / unit in the shown device 200 has the function of implementing each step in the method 100 provided by the embodiments of the present disclosure and can achieve its corresponding technical effects. For the sake of brevity, they are not described herein again.

[0080] Figure 3 The structure diagram of an exemplary electronic device capable of implementing the embodiments of the present disclosure is shown. The electronic device 300 is intended to represent various forms of digital computers, such as, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device 300 can also represent various forms of mobile devices, such as, personal digital processors, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0081] As Figure 3As shown, the electronic device 300 includes a computing unit 301, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 302 or a computer program loaded from a storage unit 308 into a random access memory (RAM) 303. In the RAM 303, various programs and data required for the operation of the electronic device 300 can also be stored. The computing unit 301, the ROM 302, and the RAM 303 are connected to each other via a bus 304. An I / O interface 305 is also connected to the bus 304.

[0082] Multiple components in the electronic device 300 are connected to the I / O interface 305, including: an input unit 306, such as a keyboard, a mouse, etc.; an output unit 307, such as various types of displays, speakers, etc.; a storage unit 308, such as a magnetic disk, an optical disc, etc.; and a communication unit 309, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 309 allows the electronic device 300 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0083] The computing unit 301 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 301 include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The computing unit 301 executes the various methods and processes described above, such as method 100. For example, in some embodiments, method 100 can be implemented as a computer software program that is tangibly contained in a machine-readable medium, such as the storage unit 308. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 300 via the ROM 302 and / or the communication unit 309. When the computer program is loaded into the RAM 303 and executed by the computing unit 301, one or more steps of method 100 described above can be executed. Alternatively, in other embodiments, the computing unit 301 can be configured to execute method 100 in any other appropriate manner (e.g., by means of firmware).

[0084] The various embodiments of the systems and techniques described above in this document can be implemented in digital electronic circuitry, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that receives data and instructions from a storage system, at least one input device, and at least one output device, and transmits the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0085] The program code for implementing the methods of the present disclosure can be written in any combination of one or more programming languages. These program codes can be provided to the processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the program code is executed by the processor or controller, the functions / operations specified in the flowchart and / or block diagram are implemented. The program code can be executed entirely on the machine, partially on the machine, executed partially on the machine as an independent software package and partially on a remote machine, or executed entirely on a remote machine or server.

[0086] In the context of the present disclosure, a machine-readable medium can be a tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media would include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0087] It should be noted that the present disclosure also provides a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to cause a computer to execute method 100 and achieve the corresponding technical effects achieved by the method of the embodiments of the present disclosure. For the sake of concise description, details are not repeated here.

[0088] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the computer. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0089] The systems and techniques described herein can be implemented in a computing system including backend components (e.g., as a data server), or a computing system including middleware components (e.g., an application server), or a computing system including frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system including any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), and the Internet.

[0090] A computer system can include a client and a server. The client and the server are generally remote from each other and typically interact through a communication network. The relationship between the client and the server is generated by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, or a server of a distributed system, or a server incorporating a blockchain.

[0091] It should be understood that various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps recited in this disclosure can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this is not limited herein.

[0092] The above specific embodiments do not constitute a limitation on the protection scope of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure shall be included within the protection scope of this disclosure.

Claims

1. A wide elevation angle multi-dimensional scanning method for a planar phased array weather radar, characterized in that: include: Determine the elevation stepping interval of the vertical mechanical scanning according to the preset narrowest beam width of the vertical electronic scanning; Perform vertical mechanical scanning at the elevation step interval starting from the preset initial angle. Perform a PPI mode scan after each vertical mechanical scan. Repeat the vertical mechanical scanning and PPI mode scanning operations until the elevation angle of the vertical mechanical scanning reaches a preset end angle.

2. The method according to claim 1, characterized in that The vertical mechanical scanning is performed at an elevation angle step interval starting from a preset initial angle, comprising: The array antenna in the control plane phased array weather radar gradually rotates in the vertical direction according to the elevation step interval from a preset initial angle to perform vertical mechanical scanning. Each time a vertical mechanical scan is performed, the rotation angle of the array antenna increases by an elevation step interval based on the rotation angle of the array antenna during the previous vertical mechanical scan.

3. The method according to claim 1, characterized in that The PPI mode scanning includes: Vertical electronic scanning and horizontal mechanical scanning.

4. The method according to claim 3, characterized in that The preset end angle is determined by: The preset end angle is determined according to the detection requirements and the elevation range of the vertical electronic scan.

5. The method according to claim 3, characterized in that: The vertical electronic scanning and horizontal mechanical scanning are performed in the following manner: Change the phase of each antenna unit on the array antenna in the planar phased array weather radar to perform vertical electronic scanning, and then / before / simultaneously perform 360-degree horizontal mechanical scanning in the horizontal direction.

6. The method according to claim 5, characterized in that The 360-degree horizontal mechanical scanning in the horizontal direction includes: During the horizontal mechanical scanning process, the planar phased array weather radar transmits beams to the airspace within 360o in the horizontal direction and receives echo signals from the detected target.

7. A wide elevation angle multi-dimensional scanning device for a planar phased array weather radar corresponding to claim 1, characterized in that: include: An elevation step interval determination module is used to determine the elevation step interval of the vertical mechanical scanning according to a preset narrowest beam width of the vertical electronic scanning; The scanning control module is used to perform vertical mechanical scanning at an elevation step interval starting from a preset initial angle, and perform a PPI mode scan each time a vertical mechanical scan is completed; the vertical mechanical scanning and PPI mode scanning operations are repeated until the elevation angle of the vertical mechanical scan reaches a preset end angle.

8. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1 to 6.

9. A non-transitory computer-readable storage medium storing computer instructions, wherein: The computer instructions are used to cause the computer to execute the method according to any one of claims 1-6.

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