A two-dimensional phased array radar precision positioning calibration device

Abstract

The utility model relates to two -dimensional phased array radar technical field, concretely for a kind of two -dimensional phased array radar accurate positioning calibration device, including calibration module, calibration module signal is connected with calibration result output module and data logger, data interaction connection is carried out between the calibration module and two -dimensional phased array radar module, the input end of calibration module is respectively signal connected with big dipper positioning module, digital display angle of inclination instrument, precision compass and attitude sensor, the utility model is with centimeter level positioning, double dimension angle calibration, real-time attitude compensation and algorithm fusion as core, traditional radar calibration is upgraded from "artificial experience dependent type" to "full-automatic high-precision type", not only solve the precision dispersion, response lag, environment disturbance three major defects, more through standardized data flow, realize radar positioning consistency leap, provide millimeter wave level credible data basement for military monitoring, weather detection and the like scene.

Description

Technical Field

[0001] This utility model relates to the field of two-dimensional phased array radar technology, specifically a two-dimensional phased array radar precise positioning and calibration device. Background Technology

[0002] A two-dimensional phased array radar is a radar system that achieves independent scanning in both azimuth and elevation dimensions by electronically controlling the phase and amplitude of each radiating element in the array antenna. In surveillance and detection applications, accurate positioning information is required to determine the true location of targets, which places high demands on the radar's installation and positioning accuracy.

[0003] Traditional radar positioning calibration methods rely heavily on manual measurement and experience-based adjustments, resulting in limited accuracy and a high risk of error. The lack of standardized calibration criteria and automated calibration equipment leads to significant variations in positioning accuracy between different batches of radars, impacting the accuracy of detection data and data fusion between different radars. Therefore, we propose a precise positioning calibration device for two-dimensional phased array radar. Utility Model Content

[0004] The purpose of this invention is to solve the problems of manual calibration methods in the existing technology, which rely on manual labor, have low accuracy, and poor consistency, and to provide a precise positioning and calibration device for two-dimensional phased array radar.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A two-dimensional phased array radar precision positioning calibration device includes a calibration module. The calibration module is signal-connected to a calibration result output module and a data logger. The calibration module and the two-dimensional phased array radar module are connected for data interaction. The input terminals of the calibration module are signal-connected to a Beidou positioning module, a digital display inclinometer, a precision compass, and an attitude sensor, respectively.

[0007] Preferably, the BeiDou positioning module is internally configured with a dual-frequency antenna. The dual-frequency antenna is signal-connected to a radio frequency front-end module. The radio frequency front-end module is signal-connected to a baseband processor. The input terminal of the baseband processor is electrically connected to a clock module. The baseband processor and a memory are connected for data interaction. The output terminal of the baseband processor is signal-connected to a positioning solver. The output terminal of the positioning solver is electrically connected to a serial port interface, a location information output module, and a network interface, respectively. The radio frequency front-end module, the baseband processor, the clock module, and the memory are each powered by a power management module.

[0008] Preferably, the measurement accuracy of the digital tilt meter is not less than ±0.02°, which can ensure that the installation error of the radar array is not greater than 0.1°.

[0009] Preferably, the precision compass has an orientation accuracy of not less than ±0.1°, and is used to provide a reference for azimuth measurement.

[0010] Preferably, the attitude sensor is capable of real-time compensation for angular deviations caused by vibration or environmental disturbances.

[0011] Preferably, the data recorded by the data logger includes at least the calibration results of distance accuracy, azimuth accuracy, and pitch accuracy.

[0012] Preferably, the two-dimensional phased array radar precise positioning and calibration device also includes an installation structure, which is used to fix the digital display inclinometer and attitude sensor to the radar array surface. The fixing method used by the installation structure is one of a variety of connection methods such as snap-fit ​​connection and bolt connection, which will not be described in detail here.

[0013] Preferably, the calibration module integrates multiple positioning information and automatically calculates the transformation parameters between the radar coordinate system and the geographic coordinate system.

[0014] By employing the above technical solution, this utility model provides a precise positioning and calibration device for a two-dimensional phased array radar. Its beneficial effects are as follows: This utility model, with centimeter-level positioning, two-dimensional angle calibration, real-time attitude compensation, and algorithm fusion as its core, upgrades traditional radar calibration from a "manual experience-dependent" model to a "fully automatic high-precision" model. It not only solves the three major defects of accuracy dispersion, response lag, and environmental disturbance, but also achieves a leap in radar positioning consistency through standardized data streams, providing a millimeter-wave level reliable data foundation for scenarios such as military monitoring and meteorological detection. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0016] Figure 1 A schematic diagram of a precise positioning and calibration device for a two-dimensional phased array radar.

[0017] Figure 2 This is a schematic diagram of the internal structure of the BeiDou positioning module.

[0018] In the diagram: 1. Beidou positioning module; 2. Digital display inclinometer; 3. Precision compass; 4. Attitude sensor; 5. Calibration module; 6. Data logger; 11. Dual-band antenna; 12. RF front-end module; 13. Baseband processor; 14. Clock module; 15. Memory; 16. Positioning solver; 17. Serial port interface; 18. Location information output module; 19. Network interface; 120. Power management module. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] A precise positioning and calibration device for a two-dimensional phased array radar, such as Figures 1-2 As shown, it includes a calibration module 5, which is signal-connected to a calibration result output module and a data logger 6. The calibration module 5 is connected to a two-dimensional phased array radar module for data interaction. The input terminals of the calibration module 5 are respectively signal-connected to a Beidou positioning module 1, a digital display inclinometer 2, a precision compass 3, and an attitude sensor 4.

[0022] The Beidou positioning module 1 is internally configured with a dual-frequency antenna 11. The dual-frequency antenna 11 is connected to a radio frequency front-end module 12. The radio frequency front-end module 12 is connected to a baseband processor 13. The input terminal of the baseband processor 13 is electrically connected to a clock module 14. The baseband processor 13 and the memory 15 are connected for data interaction. The output terminal of the baseband processor 13 is connected to a positioning solver 16. The output terminal of the positioning solver 16 is electrically connected to a serial port interface 17, a location information output module 18, and a network interface 19, respectively. The radio frequency front-end module 12, the baseband processor 13, the clock module 14, and the memory 15 are powered by a power management module 120.

[0023] The digital tiltmeter 2 has a measurement accuracy of no less than ±0.02°, which can ensure that the installation error of the radar array is no greater than 0.1°.

[0024] The precision compass 3 has an orientation accuracy of no less than ±0.1° and is used to provide a reference for azimuth measurement.

[0025] The attitude sensor 4 can compensate for angular deviations caused by vibration or environmental disturbances in real time.

[0026] The data recorded by the data logger 6 includes at least the calibration results for distance accuracy, azimuth accuracy, and pitch accuracy.

[0027] The two-dimensional phased array radar precision positioning and calibration device also includes an installation structure, which is used to fix the digital display inclinometer 2 and attitude sensor 4 to the radar array surface.

[0028] In use, the two-dimensional phased array radar precision positioning calibration device of this utility model transmits latitude, longitude, and time signals to the calibration module 5 for calibration through the Beidou positioning module 1. Inside the Beidou positioning module 1, the Beidou signal is first transmitted to the radio frequency front-end 12 through the dual-frequency antenna 11. The radio frequency front-end 12 then converts the Beidou signal into a digital signal and transmits it to the baseband processor 13. The clock module 14 transmits the calibrated clock to the baseband processor 13 for processing through an electrical signal. The baseband processor 13 stores the data in the memory 15. The memory 15 then transmits the historical data to the processing unit of the baseband processor 13. The precise position information is then output through the positioning solver 16. At the same time, the data is transmitted over the network through the network interface 19, and the position data, along with the position information output module 18, is transmitted to the calibration module 5 through the serial port interface 17. The power supply provides power to the radio frequency front-end 12, the baseband processor 13, the memory 15, and the clock module 14 to ensure the normal operation of the Beidou positioning module 1.

[0029] A digital inclinometer 2 is fixed on the radar array to calibrate the horizontal reference and ensure the radar is installed horizontally. A precision compass 3 is used to determine the angle between the radar array normal and true north. An attitude sensor 4 monitors the real-time changes in the radar equipment's attitude to ensure its stability. The Beidou positioning module 1, digital inclinometer 2, precision compass 3, and attitude sensor 4 transmit digital signals to the calibration module 5. The calibration module 5 fuses and processes the data and converts the calibrated coordinates into parameters, which are then recorded to the data logger 6. By using centimeter-level positioning, dual-dimensional angle calibration, real-time attitude compensation, and algorithm fusion as the core, traditional radar calibration is upgraded from "manual experience-dependent" to "fully automatic high-precision." This not only solves the three major defects of accuracy dispersion, response lag, and environmental disturbance, but also achieves a leap in radar positioning consistency through standardized data flow, providing a millimeter-wave level reliable data foundation for military monitoring, meteorological detection, and other scenarios.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-dimensional phased array radar precise positioning calibration device, comprising a calibration module (5), characterized in that: The calibration module (5) is connected to the calibration result output module and the data logger (6). The calibration module (5) is connected to the two-dimensional phased array radar module for data interaction. The input end of the calibration module (5) is connected to the Beidou positioning module (1), the digital display inclinometer (2), the precision compass (3), and the attitude sensor (4).

2. The precise positioning and calibration device for a two-dimensional phased array radar according to claim 1, characterized in that: The Beidou positioning module (1) is internally configured with a dual-frequency antenna (11). The dual-frequency antenna (11) is connected to a radio frequency front-end module (12). The radio frequency front-end module (12) is connected to a baseband processor (13). The input terminal of the baseband processor (13) is electrically connected to a clock module (14). The baseband processor (13) and the memory (15) are connected for data interaction. The output terminal of the baseband processor (13) is connected to a positioning solver (16). The output terminal of the positioning solver (16) is electrically connected to a serial port interface (17), a location information output module (18), and a network interface (19). The radio frequency front-end module (12), the baseband processor (13), the clock module (14), and the memory (15) are powered by a power management module (120).

3. The precise positioning and calibration device for a two-dimensional phased array radar according to claim 1, characterized in that: The measurement accuracy of the digital tilt meter (2) is not less than ±0.02°, which can ensure that the installation error of the radar array is not greater than 0.1°.

4. The precise positioning and calibration device for a two-dimensional phased array radar according to claim 1, characterized in that: The precision compass (3) has an orientation accuracy of not less than ±0.1° and is used to provide a reference for azimuth measurement.

5. The precise positioning and calibration device for a two-dimensional phased array radar according to claim 1, characterized in that: The attitude sensor (4) can compensate for angle deviations caused by vibration or environmental disturbances in real time.

6. The precise positioning and calibration device for a two-dimensional phased array radar according to claim 1, characterized in that: The data recorded by the data logger (6) includes at least the calibration results of distance accuracy, azimuth accuracy and pitch accuracy.

7. The precise positioning and calibration device for a two-dimensional phased array radar according to claim 1, characterized in that: The two-dimensional phased array radar precision positioning calibration device also includes an installation structure, which is used to fix the digital display inclinometer (2) and attitude sensor (4) on the radar array surface.

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