Weather radar meteorological echo interference device
By designing a weather radar meteorological echo jamming device that includes data interface, power control, data processing and signal output modules, the problem of mutual interference between radar systems was solved, flexible intermediate frequency signal processing and wide applicability were achieved, and power consumption and hardware requirements were reduced.
Patent Information
- Application Number
- CN202422189134.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-09-06
AI Technical Summary
In existing radar systems, mutual interference between radars leads to the appearance of false targets. Existing jamming devices are limited in application scenarios, costly, and lack flexibility and feedback capabilities, and cannot be adapted to radars from different manufacturers.
A weather radar meteorological echo jamming device was designed, comprising a data interface module, a power control module, a data processing module, a clock module, and a signal output module. It adopts a combination of various interfaces and chips to achieve flexible intermediate frequency signal processing and remote control, and is adaptable to various radar systems.
It reduces device power consumption and hardware requirements, increases the flexibility and universality of intermediate frequency signals, adapts to more application scenarios, and improves the stability and applicability of the device.
Smart Images
Figure CN223526500U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to communication field especially relates to a weather radar meteorological echo interference device. BACKGROUND
[0002] Due to the popularity of various radars and the networking of weather radars, the mutual interference between radars has become a problem to be solved. When multiple radars of the same or similar models are started at the same time, the signals emitted by each radar enter the receivers of other radars through the main lobe or side lobe of the radar antenna, thereby forming synchronous interference. Synchronous interference can cause a large number of false targets to appear on the radar display, seriously affecting the normal detection of targets by the radar system. Therefore, how to solve the problem of mutual interference between radars is currently a consideration.
[0003] The existing single-band signal interference device generates echo interference signals at a specified band frequency. Due to the single band frequency, the use object is specific, which limits the use scenario. In order to meet the actual application, multiple devices may be carried during use, which limits transportation and increases cost. Moreover, the current technology generates interference signals by storing several signal waveforms in memory and controlling the output of several signals by reading different memory addresses. However, the memory address data is limited and not flexible enough to meet most scenarios. The use of radar requires high requirements, and it is difficult to use in radars from different manufacturers. Moreover, it does not have the ability to feedback interference signal parameters, and it is difficult to clearly understand the interference signal situation. In the event of a fault or a specific situation, it is difficult to make timely adjustments. SUMMARY
[0004] The utility model aims at overcoming the shortcomings of prior art, provides a weather radar meteorological echo interference device, solves the deficiency of prior art.
[0005] The utility model discloses a weather radar meteorological echo interference device, the interference device includes data interface module, power control module, data processing module, clock module and signal output module;
[0006] The data interface module and data processing module are connected with each other, the output end of the clock module is connected with the input end of data processing module, the output end of data processing module is connected with the input end of signal output module, and the power control module is connected with the power supply input end of data interface module, data processing module, clock module and signal output module.
[0007] The data interface module includes an Ethernet interface, a TTL level interface and an RS422 level interface;The Ethernet interface, TTL level interface and RS422 level interface are connected with each other and the data processing module.
[0008] The Ethernet interface comprises a PHY chip U26 and an RJ-45 interface J13; the RJ-45 interface J13 is connected with the PHY chip U26, the PHY chip U26 is configured as an RGMII interface, and the PHY chip U26 is connected with the data processing module.
[0009] The TTL level interface comprises chips U23, U27, U43 and U46; the chips U23 and U27 are connected with the data processing module, VCC_5.5V is converted into VCC_3.3V; the chips U43 and U46 are connected with the data processing module, and VCC_3.3V is converted into VCC_5.5V.
[0010] The RS422 level interface comprises chips U22 and U28; the chip U22 is connected with the data processing module to realize RS422 sending, and the chip U28 is connected with the data processing module to realize RS422 receiving.
[0011] The clock module comprises an AD9516-3 chip, the AD9516-3 chip is connected with the data processing module, the data processing module controls the AD9516-3 chip to realize phase locking and frequency division to generate a plurality of synchronous clocks with different frequencies.
[0012] The weather radar meteorological echo interference device has the following advantages: compared with a traditional meteorological echo interference device, the device reduces the working complexity of signal processing, hands over the processing of signals to a remote control terminal, reduces the power consumption and hardware demand of the device, increases the flexibility of intermediate frequency signals, and makes the device have better universality and stability. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The figure is a structural schematic diagram of the utility model;
[0014] Figure 2 The figure is an Ethernet interface circuit schematic diagram;
[0015] Figure 3 The figure is a TTL level interface circuit schematic diagram;
[0016] Figure 4 The figure is an RS422 interface circuit schematic diagram;
[0017] Figure 5 The figure is a clock module circuit schematic diagram. DETAILED DESCRIPTION
[0018] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application and are not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in conjunction with the drawings of the present application is not intended to limit the protection scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application. The present application will be further described below with reference to the drawings.
[0019] As Figure 1 shown, the utility model relates to a meteorological radar weather echo interference device, it includes data interface module, power control module, data processing module, clock module and signal output module, data interface module and data processing module are connected with each other, the output of clock module is connected with the input of data processing module, the output of data processing module is connected with the input of signal output module, and the power supply input end of power control module is connected with data interface module, data processing module, clock module and signal output module.
[0020] Further, the data interface module includes an Ethernet interface, a TTL level interface, and an RS422 level interface. The network port communication interface is used for issuing intermediate frequency output data, issuing control commands, and returning device state data. The theoretical transmission rate can reach 1 Gbps. The TTL level interface and the RS422 interface are used for state command control and serial data transmission and reception, and can satisfy low-speed data communication.
[0021] As Figure 2 shown, the Ethernet interface includes a PHY chip U26 and an RJ-45 interface J13. The RJ-45 interface J13 is connected with the PHY chip U26, the PHY chip U26 is configured as an RGMII interface, and the PHY chip U26 is connected with the data processing module.
[0022] As Figure 3 shown, the TTL level interface includes chips U23, U27, U43, and U46. The models of the chips U23 and U27 are 74LVX4245, and the models of the chips U43 and U46 are 74LVCH1T45. The chips U23 and U27 are connected with the data processing module to convert VCC_5.5V into VCC_3.3V. The chips U43 and U46 are connected with the data processing module to convert VCC_3.3V into VCC_5.5V.
[0023] AsFigure 4 As shown, the RS422 level interface includes chips U22 and U28, wherein the model of chip U22 is AM2631, the model of chip U28 is AM26C32, chip U22 is connected with the data processing module to realize RS422 sending, and chip U28 is connected with the data processing module to realize RS422 receiving.
[0024] The ZYNQ chip selected by the data processing module is XC7Z035, and the ZYNQ of this model has excellent signal processing function under high bandwidth application, and meets the design of PL end and PS end, and can meet different design requirements in design flexibility and resources.
[0025] The clock module adopts AD9516 as a clock management chip, and through external input of a reference clock, clock phase-locked frequency division is applied to ZYNQ data processing and DA output clock through AD9516.
[0026] Further, as shown in Figure 5 The control set of AD9516-3 is connected with the PL end of ZYNQ, the PL end controls the phase-locked and frequency-division of AD9516-3 to generate multiple different frequency synchronous clocks to be provided to ADC, DAC and FPGA circuit respectively. The power supply of AD9516-3 adopts LDO chip to linearly stabilize +3.3V from +5.5V power supply, and uses magnetic bead isolation.
[0027] The signal output module adopts AD9779A as a digital-analog conversion chip, which meets the high-speed double-channel DAC output required in the design, and meets the intermediate frequency H excitation and V excitation output control.
[0028] Among them, AD9779A is configured in double-channel working mode. The reference clock of the DAC chip is provided by the PLL clock generator chip, and the clock frequency is 720 MHz. The clock signal is directly used as the internal working clock of the DAC chip, and the PLL frequency multiplication circuit in the chip is bypassed. The data acquisition clock is divided into 180MHz by the internal 4x interpolation filter and output to ZYNQ, to collect digital intermediate frequency excitation signals. The frequency range of the digital intermediate frequency signal output by the PL end is 45~75MHz, which meets the Nyquist sampling frequency. One low-noise amplifier chip and one digital control attenuator chip are configured for each output, which facilitates the realization of controllable amplitude range of the intermediate frequency excitation signal.
[0029] The utility model discloses a PS end receives the Ethernet data, wherein contains waveform data and parameter data, and data buffer can update waveform data and parameter requirement at any time, and waveform data and parameter requirement can be flexibly configured, thereby guaranteeing the diversity of waveform to adapt to more use scene demand. After the intermediate frequency signal is generated, the radio frequency signal is selected to adapt to the weather radar of different wave bands. Compared with the traditional weather echo interference device, the device reduces the work complexity of signal processing, and hands over the processing of signal to the remote control terminal, so that the device power consumption and hardware demand are reduced, the flexibility of intermediate frequency signal is increased, the device has better universality and stability.
[0030] The above is only the preferred embodiment of the utility model, and it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and improvements, and can be changed within the scope of the concept described herein by the above teaching or related technology or knowledge. The change and variation made by the person in the art without departing from the spirit and scope of the utility model should be within the protection scope of the claims attached to the utility model.
Claims
1. A weather radar meteorological echo jamming device, characterized by: The interference device comprises a data interface module, a power supply control module, a data processing module, a clock module and a signal output module; The data interface module and the data processing module are connected with each other, the output end of the clock module is connected with the input end of the data processing module, the output end of the data processing module is connected with the input end of the signal output module, and the power supply control module is connected with the power supply input ends of the data interface module, the data processing module, the clock module and the signal output module.
2. A weather radar meteorological echo jamming device according to claim 1, characterized in that: The data interface module comprises an Ethernet interface, a TTL level interface and an RS422 level interface; The Ethernet interface, the TTL level interface and the RS422 level interface are connected with the data processing module.
3. A weather radar meteorological echo jamming device according to claim 2, characterized in that: The Ethernet interface comprises a PHY chip U26 and an RJ-45 interface J13; the RJ-45 interface J13 is connected with the PHY chip U26, the PHY chip U26 is configured as an RGMII interface, and the PHY chip U26 is connected with the data processing module.
4. The weather radar meteorological echo jamming device according to claim 2, characterized in that: The TTL level interface comprises chips U23, U27, U43 and U46; the chips U23 and U27 are connected with the data processing module to realize conversion from VCC_5.5V to VCC_3.3V; the chips U43 and U46 are connected with the data processing module to realize conversion from VCC_3.3V to VCC_5.5V.
5. A weather radar meteorological echo jamming device according to claim 2, characterized in that: The RS422 level interface comprises chips U22 and U28; the chip U22 is connected with the data processing module to realize RS422 sending, and the chip U28 is connected with the data processing module to realize RS422 receiving.
6. The weather radar meteorological echo jamming device of claim 1, wherein: The clock module comprises an AD9516-3 chip; the AD9516-3 chip is connected with the data processing module, and the data processing module controls the AD9516-3 chip to realize phase locking and frequency division to generate multiple synchronous clocks with different frequencies.