External field navigation anti-interference test platform

Abstract

The utility model relates to the technical field of communication detection, and discloses an external field navigation anti-interference test platform, which comprises an outdoor field model, a signal receiving device, a control device and a plurality of navigation interference devices, a test area is arranged on the outdoor site model; the plurality of navigation interference devices are arranged around the test area; the signal receiving device comprises a mobile module and a receiver, the receiver is arranged on the mobile module, the mobile module is used for driving the receiver to move in the test area, and the receiver is used for receiving satellite navigation signals; and the control device establishes communication connection with the navigation interference device, the mobile module and the receiver. According to the external field navigation anti-interference test platform disclosed by the invention, the test items are diversified, and the dynamic interference test in an actual application scene can be simulated more truly, so that reliable data guidance is better provided for optimization and upgrading of the items.

Description

Technical Field

[0001] This application belongs to the field of communication detection technology, and particularly relates to an outdoor navigation anti-jamming test platform. Background Art

[0002] In the field of navigation equipment, especially in the field of equipment applying the third-generation Beidou navigation system, navigation receivers must have excellent anti-jamming performance to cope with complex electromagnetic interference environments.

[0003] Currently, navigation anti-jamming tests are mainly carried out in expensive anechoic chamber environments, which are not conducive to rapid open tests during the project development stage or actual application scenarios. In addition, existing outdoor interference test platforms mostly use fixed methods for static single-point tests. The test methods are single and cannot truly simulate dynamic interference tests in actual application scenarios. Therefore, reliable data guidance cannot be provided for the optimization and upgrading of projects. Utility Model Content

[0004] The purpose of this application is to provide an outdoor navigation anti-jamming test platform to solve the problem that the static single-point tests used by existing outdoor interference test platforms cannot truly simulate dynamic interference tests in actual application scenarios.

[0005] To achieve the above purpose, this application provides an outdoor navigation anti-jamming test platform, including:

[0006] An outdoor site model, on which a test area is provided;

[0007] A number of navigation jamming devices, arranged around the test area;

[0008] A signal receiving device, including a mobile module and a receiver. The receiver is arranged on the mobile module. The mobile module is used to drive the receiver to move within the test area, and the receiver is used to receive satellite navigation signals; and

[0009] A control device, which establishes a communication connection with the navigation jamming device, the mobile module and the receiver.

[0010] As a further improvement of the above technical solution:

[0011] In some embodiments, the signal receiving device further includes a lifting module. The lifting module is arranged on the mobile module and is provided with a fixed fixture for installing the receiver. The lifting module is used to drive the receiver to lift in the vertical direction.

[0012] In some embodiments, the mobile module includes a power driving mechanism for driving walking;

[0013] In some embodiments, the lifting module is connected to the power driving mechanism, and the power driving mechanism is further configured to drive the lifting module to perform lifting actions.

[0014] In some embodiments, the lifting module includes a retractable and foldable link mechanism.

[0015] In some embodiments, the lifting module includes a linear motor, a lead screw motor, an electric push rod, or a motor and rack and pinion assembly.

[0016] In some embodiments, the moving module includes a moving vehicle body and a power driving mechanism for driving the moving vehicle body to travel;

[0017] Wherein, the moving vehicle body includes:

[0018] A vehicle frame, on which the power driving mechanism and the receiver are mounted; and

[0019] A traveling wheel mechanism, disposed at the bottom of the vehicle frame and in transmission connection with the power driving mechanism.

[0020] In some embodiments, the moving module and the control device are connected by wired communication or wireless communication;

[0021] Wherein, the control device is configured to:

[0022] Control the traveling speed and traveling trajectory of the moving module;

[0023] Control the interference signals and the frequencies of the interference signals emitted by a preset number of the navigation interference devices;

[0024] Obtain the signal strength data of the satellite navigation signals received by the receiver.

[0025] In some embodiments, the navigation interference device includes:

[0026] A support frame, disposed on the outdoor site model;

[0027] A pitch adjustment module, disposed on the support frame and in communication connection with the control device; and

[0028] An interference transmitting antenna, disposed on the pitch adjustment module, and the pitch adjustment module is configured to adjust the angle of the interference signals emitted by the interference transmitting antenna.

[0029] In some embodiments, a plurality of the navigation interference devices are evenly distributed around the test area.

[0030] In some embodiments, a slope mold for simulating the undulation of the road surface and / or a tunnel mold for simulating a tunnel are provided in the test area.

[0031] Compared with the prior art, an outdoor field navigation anti-interference test platform provided by the present application has at least the following technical effects:

[0032] For the outdoor field navigation anti-interference test platform provided by the present application, a test area is set on an outdoor site model, and a number of navigation interference devices are arranged on the periphery of the test area. The navigation interference devices are used to emit interference signals to simulate interference scenarios, and the number of turned-on navigation interference devices and the frequency of the interference signals are both controllable. In this way, different interference environments can be simulated within the test area; a receiver is carried on a moving module, and the moving module can perform movements such as acceleration, deceleration, or uniform speed within the test area to simulate different movement scenarios; thus, the test items of the outdoor field navigation anti-interference test platform provided by the present application are diversified, and dynamic interference tests in actual application scenarios can be simulated more realistically, so as to better provide reliable data guidance for the optimization and upgrading of the project.

[0033] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:

[0035] Figure 1 is a schematic structural diagram of an outdoor field navigation anti-interference test platform provided by an embodiment of the present application;

[0036] Figure 2 is Figure 1 a schematic enlarged view of the partial structure at A in

[0037] Figure 3 is a schematic three-dimensional structural diagram of a navigation interference device in the outdoor field navigation anti-interference test platform provided by an embodiment of the present application.

[0038] DESCRIPTION OF THE REFERENCE NUMERALS

[0039] 100, outdoor site model; 110, test area;

[0040] 200, signal receiving device; 210, moving module; 211, vehicle frame; 212, walking wheel mechanism; 213, power driving mechanism; 220, receiver; 230, lifting module; 240, fixing fixture;

[0041] 300. Navigation interference device; 310. Support frame; 320. Pitch adjustment module; 330. Interference transmitting antenna. Detailed implementation manners

[0042] The following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and understanding the present application, and are not used to limit the present application.

[0043] The present application will be described in detail below with reference to the accompanying drawings and in combination with exemplary embodiments.

[0044] Embodiment

[0045] Please refer to Figure 1 and Figure 2 , this embodiment provides an outdoor navigation anti-interference test platform, which can be used for anti-interference testing of navigation systems in the outdoor field, especially for anti-interference testing of the Beidou navigation system based on the outdoor field.

[0046] The outdoor navigation anti-interference test platform provided in this embodiment includes an outdoor site model 100, a signal receiving device 200, a control device, and a plurality of navigation interference devices 300. Among them, the outdoor site model 100 is usually arranged outdoors, and a test area 110 is provided on the outdoor site model 100, and the signal receiving device 200 is arranged in the test area 110 for anti-interference testing.

[0047] A plurality of navigation interference devices 300 are arranged around the test area 110 to ensure that the interference signal can evenly cover the entire test area 110.

[0048] The signal receiving device 200 includes a moving module 210 and a receiver 220. The receiver 220 is arranged on the moving module 210. The moving module 210 is used to drive the receiver 220 to move within the test area 110, and the receiver 220 is used to receive satellite navigation signals. Among them, an anti-interference antenna module is built in the receiver 220 to achieve anti-interference of the receiver 220.

[0049] The control device respectively establishes communication connections with the navigation interference device 300, the moving module 210, and the receiver 220. In this embodiment, the control device is configured to:

[0050] Control the traveling speed and traveling trajectory of the moving module 210;

[0051] Control a preset number of navigation interference devices 300 to emit interference signals and the frequency of the interference signals;

[0052] Obtain the signal strength data of the satellite navigation signals received by the receiver 220.

[0053] It can be understood that under the control of the control device, according to the test requirements, the receiver 220 carried by the mobile module 210 can be controlled to travel along a preset trajectory, and the mobile module 210 can be controlled to accelerate, decelerate or travel at a constant speed, etc., to operate in the test area 110, so as to realize the dynamic anti-interference test of the receiver 220 receiving satellite navigation signals. Furthermore, the control device can also control the number of the navigation interference devices 300 turned on and the frequency of the interference signals emitted, so as to simulate the interference degree of different interference intensities or interference frequencies on the satellite navigation signals, and the control device can obtain the signal strength data of the receiver 220 in real time, so as to detect the anti-interference data of the receiver 220.

[0054] In this way, the test items of the outdoor navigation anti-interference test platform provided by this embodiment are diversified, and the dynamic interference test in the actual application scenario can be more realistically simulated, so as to better provide reliable data guidance for the optimization and upgrade of the project.

[0055] Furthermore, in this embodiment, the mobile module 210 and the control device are connected by wire communication or wireless communication. Among them, the wireless communication connection methods include WI-FI, Bluetooth, 5G, 4G, etc.

[0056] Please refer to Figure 1 and Figure 2 , the above signal receiving device 200 further includes a lifting module 230. The lifting module 230 is arranged on the mobile module 210 and is provided with a fixed fixture 240 for installing the receiver 220. The lifting module 230 is used to drive the receiver 220 to lift and lower in the vertical direction.

[0057] In this way, through the cooperation of the lifting module 230 and the mobile module 210, the dynamic anti-interference test of the receiving device at different heights in the vertical direction during the movement process can be realized. The dynamic anti-interference test of the receiver 220 in the vertical direction can also be realized.

[0058] Specifically, the mobile module 210 includes a power driving mechanism 213 for driving the movement; the lifting module 230 is connected to the power driving mechanism 213, and the power driving mechanism 213 is also used to drive the lifting module 230 to perform lifting actions. In this way, the lifting module 230 and the mobile module 210 share the power driving mechanism 213, thereby saving a power driving mechanism 213, reducing the weight of the entire signal receiving device 200, and reducing costs.

[0059] Among them, the power driving mechanism 213 includes a driving motor or a driving electric machine. The power of the driving motor or the driving electric machine can be provided by an external power supply, or a rechargeable energy storage battery can be configured in the power driving mechanism 213.

[0060] Optionally, the lifting module 230 includes a retractable and foldable link mechanism. The power driving mechanism 213 converts the rotational motion into a reciprocating motion for driving the link mechanism to retract and fold through a transmission mechanism. For example, transmission mechanisms such as a rack and pinion, a crank-slider, or a cam-slider. It should be understood that the above are only examples and do not limit the protection scope of the present application.

[0061] In some embodiments, the lifting module 230 does not share the power driving mechanism 213 with the moving module 210. Among them, the lifting module 230 can be equipped with its own power driving unit, and the lifting of the lifting module 230 is controlled by the control device. For example, the lifting module 230 includes a linear motor, a lead screw motor, an electric push rod, or a combination of a motor and a rack and pinion.

[0062] The moving module 210 includes a moving vehicle body, and the power driving mechanism 213 is arranged on the moving vehicle body and used to drive the moving vehicle body to move.

[0063] Among them, the moving vehicle body includes a vehicle frame 211 and a traveling wheel mechanism 212; the power driving mechanism 213 and the lifting module 230 are installed on the vehicle frame 211, and the receiver 220 is installed on a fixed fixture 240 arranged on the top of the lifting module 230. The fixed fixture 240 can fix the receiver 220 to prevent it from shaking or falling during the movement.

[0064] The traveling wheel mechanism 212 is arranged at the bottom of the vehicle frame 211 and is in transmission connection with the power driving mechanism 213. The traveling wheel mechanism 212 includes wheels and a steering controller, the steering controller controls the steering of the wheels, and the drive shaft of the wheels is rotationally connected to the power driving mechanism 213 through a transmission mechanism. Optionally, the steering controller is an electric power steering.

[0065] Please refer to Figure 1 and Figure 3 , furthermore, the above-mentioned several navigation interference devices 300 are evenly distributed around the test area 110. In this way, it is ensured that the interference signals are evenly distributed throughout the test area 110. Optionally, this embodiment shows 6 groups of navigation interference devices 300. Of course, it can also be 5 groups, 4 groups, 7 groups, 8 groups or other numbers of navigation interference devices 300. The above are only examples and do not limit the protection scope of the present application.

[0066] In this embodiment, the navigation interference device 300 includes a support frame 310, a pitch adjustment module 320, and an interference transmitting antenna 330. The support frame 310 is disposed on the outdoor site model 100; the pitch adjustment module 320 is disposed on the support frame 310 and is communicatively connected to the control device; the interference transmitting antenna 330 is disposed on the pitch adjustment module 320. The pitch adjustment module 320 is communicatively connected to the control device, and the control device controls the pitch adjustment module 320 to adjust the angle of the interference signal transmitted by the interference transmitting antenna 330. In this way, the interference test of the satellite navigation signal by the interference transmitting antenna 330 transmitting interference signals at multiple different pitch angles can be simulated.

[0067] In some embodiments, the pitch adjustment module 320 includes an antenna mounting base, a pitch bracket, a pitch motor, a worm and worm gear assembly, and an inclination sensor. The pitch bracket is hinged to the support frame 310, the antenna mounting base is disposed on the pitch bracket, and the interference transmitting antenna 330 is fixed to the antenna mounting base. The pitch motor is disposed on the support frame 310 and is drivingly connected to the worm of the worm and worm gear assembly, and the worm wheel of the worm and worm gear assembly is assembled on the rotating shaft of the pitch bracket. In this way, the pitch motor drives the worm and worm gear assembly to drive the pitch bracket to swing relative to the support frame 310 in the vertical plane, thereby realizing the pitch angle adjustment of the interference transmitting antenna 330.

[0068] It can be understood that the worm and worm gear assembly is driven by the pitch motor. By using its high reduction ratio, the high-speed rotation of the pitch motor can be converted into the slow rotation of the worm wheel to achieve precise control of the pitch angle. The one-way transmission characteristic of the worm and worm gear assembly can prevent reverse driving, ensure the stability of the adjusted position, and avoid deviation caused by external forces (such as wind).

[0069] The inclination sensor is arranged on the pitch bracket and is used to detect the pitch angle of the pitch bracket in real time and feed the detection result back to the control device, thereby realizing the closed-loop precise control of the pitch adjustment module 320.

[0070] The above control device includes a controller and a human-machine interaction display. The controller can be selected as a PLC controller, an industrial computer, or an embedded controller.

[0071] In some embodiments, a slope mold for simulating the undulation of the road surface is provided in the test area 110 of the outdoor site model 100, so as to simulate the actual working condition of a vehicle driving on an uneven road surface.

[0072] In other embodiments, a tunnel mold for simulating a tunnel is provided in the test area 110 of the outdoor site model 100, so as to simulate the actual working condition of a vehicle driving in a tunnel.

[0073] In still other embodiments, building molds or mountain molds can also be arranged for anti-interference tests.

[0074] Compared with the prior art, the outdoor navigation anti-interference test platform provided in this embodiment has the following advantages:

[0075] (1) By using the moving module 210 to carry the receiver 220 to accelerate, decelerate or travel at a constant speed, the anti-interference test of the motion state is realized, and the anti-interference test under various driving trajectories is simulated by matching structures such as a slope mold and a tunnel mold;

[0076] (2) By matching the lifting module 230 to drive the receiver 220 to lift in the vertical direction, the dynamic anti-interference test in different height spaces or in the vertical direction is realized;

[0077] (3) By changing the number of navigation interference devices 300 and the frequency of the emitted interference signals, the interference test of the satellite navigation signal under different interference degrees is realized;

[0078] (4) By using the pitch adjustment module 320 to enable the interference transmitting antenna 330 to emit interference signals at a variety of different pitch angles, the interference test of the satellite navigation signal by interference signals at different pitch angles is realized;

[0079] (5) The outdoor navigation anti-interference test platform provided in this embodiment has a simple structure and low manufacturing cost.

[0080] It should be noted that the outdoor navigation anti-interference test platform provided in this embodiment mainly involves improvements in structure and spatial position layout. What it core protects is an anti-interference test platform that truly simulates the dynamic interference test in the actual application scenario, rather than the protection of programs and methods. However, the action control of the above devices and structures inevitably involves the application of programs and methods. Among them, the controller in this application can be selected as a PLC controller, an industrial computer or an embedded controller. These controllers are all relatively common components in the prior art, and the controller is only used for signal transmission and does not involve improvements in programs.

[0081] Furthermore, the communication connection and signal transmission between the control device and the navigation interference device 300, the moving module 210 and the receiver 220 belong to the communication technologies well-known to those skilled in the art (for example, the existing wired and wireless communication technologies are listed in this embodiment). Therefore, it is only the application of the existing communication technology in this outdoor navigation anti-interference test platform and does not involve improvements in computer software programs and methods.

[0082] It should also be noted that in this application, unless otherwise stated, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this 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 should not be construed as a limitation to this application.

[0083] In the description of this application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0084] In this application, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0085] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0086] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An outfield navigation anti-interference test platform, characterized in that include: An outdoor venue model (100), wherein a test area (110) is provided on the outdoor venue model (100); A plurality of navigation jammers (300) are arranged around the test area (110); A signal receiving device (200), comprising a mobile module (210) and a receiver (220), wherein the receiver (220) is arranged on the mobile module (210), the mobile module (210) is used to drive the receiver (220) to move within the test area (110), and the receiver (220) is used to receive satellite navigation signals; and A control device establishes a communication connection with the navigation jammer (300), the mobile module (210) and the receiver (220).

2. The outfield navigation anti-interference test platform according to claim 1, characterized in that The signal receiving device (200) further comprises a lifting module (230), the lifting module (230) being arranged on the moving module (210) and provided with a fixing fixture (240) for mounting the receiver (220), the lifting module (230) being used to drive the receiver (220) to rise and fall in a vertical direction.

3. The outfield navigation anti-interference test platform according to claim 2, characterized in that, The moving module (210) comprises a power driving mechanism (213) for driving walking; The lifting module (230) is connected to the power drive mechanism (213), and the power drive mechanism (213) is also used to drive the lifting module (230) to perform a lifting action.

4. The outfield navigation anti-interference test platform according to claim 3, characterized in that, The lifting module (230) comprises a telescopic and foldable connecting rod mechanism.

5. The outfield navigation anti-interference test platform according to claim 2, characterized in that The lifting module (230) comprises a linear motor, a lead screw motor, an electric push rod, or a motor and a gear rack assembly.

6. The outfield navigation anti-interference test platform according to claim 1, characterized in that The mobile module (210) comprises a mobile body and a power drive mechanism (213) for driving the mobile body to move; Wherein, the mobile vehicle body comprises: a vehicle frame (211), the power drive mechanism (213) and the receiver (220) being mounted on the vehicle frame (211); and A walking wheel mechanism (212) is arranged at the bottom of the vehicle frame (211) and is drivingly connected to the power driving mechanism (213).

7. The outfield navigation anti-interference test platform according to any one of claims 1-6, characterized in that, The mobile module (210) is connected to the control device by wired communication or wireless communication; Wherein, the control device is configured as follows: Controlling the driving speed and trajectory of the mobile module; Controlling a preset number of the navigation jammers to emit jamming signals and the frequencies of the jamming signals; Acquire signal strength data of the satellite navigation signal received by the receiver.

8. The outfield navigation anti-interference test platform according to claim 1, characterized in that The navigation interference device (300) comprises: A support frame (310) is arranged on the outdoor venue model (100); A pitch adjustment module (320) is disposed on the support frame (310) and is communicatively connected to the control device; and The interference transmitting antenna (330) is arranged on the pitch adjustment module (320), and the pitch adjustment module (320) is used to adjust the angle at which the interference transmitting antenna (330) transmits the interference signal.

9. The outfield navigation anti-interference test platform according to claim 1 or 8, characterized in that, A plurality of the navigation interference devices (300) are evenly distributed around the test area (110).

10. The outfield navigation anti-interference test platform according to claim 1, characterized in that, The test area (110) is provided with a slope mold for simulating the undulation of the road surface and / or a tunnel mold for simulating a tunnel.

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