Radar experiment equipment

Abstract

The utility model relates to radar experiment equipment, and belongs to the technical field of radar experiment teaching. Comprising a box body, a mounting plate and a radar circuit, the box body comprises a box body and a box cover connected to the top of the box body; the mounting plate is arranged in the box body, a first accommodating space is arranged between the mounting plate and the box cover and is used for accommodating mounted components, and a second accommodating space is arranged between the mounting plate and the bottom of the box body and is used for accommodating dismounted components; the radar circuit comprises a low-frequency circuit module, a radio frequency circuit module and a power supply module which are detachably mounted on the mounting plate, and the low-frequency circuit module, the radio frequency circuit module and the power supply module are detachably connected; each module comprises a plurality of components, the components are detachably connected, and the components are detachably mounted on the mounting plate. The device is convenient to carry, can display or freely assemble components in a radar circuit, and is high in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of radar experiment teaching, in particular to radar experiment equipment. Background Art

[0002] Existing radar teaching systems often use large and heavy equipment that is inconvenient to carry, making it difficult to implement radar teaching or experiments in various scenarios. The connection relationship between the internal components of the radar system is not displayed to the outside world, making it impossible to teach or experiment with the radar system circuit connection, resulting in insufficient in-depth teaching of the principles. In addition, the internal circuit structure of the radar system is fixed and cannot be disassembled and replaced. Only teaching or experiments with a single circuit structure can be carried out, and the design and experiments of multiple radar circuits cannot be carried out, resulting in low applicability. Utility Model Content

[0003] Based on this, the utility model provides a radar experimental device which is easy to carry, can be freely disassembled and assembled, and is low-cost.

[0004] The content of the utility model includes a radar experimental device, including a box, a mounting plate and a radar circuit;

[0005] The box body includes a box body and a box cover connected to the top of the box body;

[0006] The mounting plate is arranged in the box body, and a first accommodating space is provided between the mounting plate and the box cover for accommodating installed components, and a second accommodating space is provided between the mounting plate and the bottom of the box body for placing disassembled components;

[0007] The radar circuit includes a low-frequency circuit module, a radio frequency circuit module, and a power supply module that are detachably mounted on a mounting plate, and the low-frequency circuit module, the radio frequency circuit module, and the power supply module are detachably connected;

[0008] Each module includes multiple components, which are detachably connected to each other and detachably mounted on a mounting plate.

[0009] Furthermore, the mounting plate is a wooden board, and the components are mounted on the mounting plate by screws or bolts.

[0010] Furthermore, a plurality of mounting holes distributed in an array are provided on the mounting plate;

[0011] A through hole is set on the side of the component, and the ejector pin passes through the through hole and the mounting hole in sequence; or a guide column that matches the mounting hole is set at the bottom of the component, and the component is plugged into the mounting plate.

[0012] Furthermore, one side of the mounting plate is hinged to the box body, and the opposite side can be flipped over and detachably connected to the box body; or, the mounting plate is detachably installed in the box body.

[0013] Furthermore, one side of the box cover is hinged to the box body, and a lock is provided between the opposite side and the box body; and a handle is provided on the outer wall of the box body.

[0014] Furthermore, the low-frequency circuit module includes a waveform generating unit, an intermediate frequency amplifying unit and a signal processing unit;

[0015] The waveform generating unit is used for generating a triangle wave signal and a square wave signal;

[0016] The intermediate frequency amplification unit is connected to the radio frequency circuit module and is used to amplify the intermediate frequency echo signal obtained by frequency modulation mixing and output it as an analog audio signal to the signal processing unit.

[0017] Furthermore, the radio frequency circuit module includes a radio frequency component and an antenna array that are detachably connected to each other;

[0018] RF components include radar signal generators, power amplifiers, power dividers, low-noise power amplifiers, and mixers;

[0019] The antenna array includes a transmitting antenna and a receiving antenna;

[0020] The radar signal generator, power amplifier, power divider and transmitting antenna are detachably connected in sequence, the receiving antenna, low-noise power amplifier and mixer are detachably connected in sequence, and the power divider is also detachably connected to the mixer;

[0021] The input end of the radar signal generator is detachably connected to the waveform generating unit, and the output end of the mixer is detachably connected to the intermediate frequency amplifying unit.

[0022] Furthermore, the RF components are connected to the antenna array via a cable, and the RF components are connected to each other via SMA adapters.

[0023] Furthermore, the power module includes a battery and a power conversion unit;

[0024] The battery and the power conversion unit are detachably connected;

[0025] The power conversion unit is detachably connected to the waveform generating unit, the intermediate frequency amplifying unit, the radar signal generator, the power amplifier and the low-noise power amplifier.

[0026] Furthermore, the type of the continuous wave signal output by the radar signal generator is switched by switching the control voltage supplied from the power conversion unit to the radar signal generator.

[0027] Beneficial effects of the utility model:

[0028] In the radar experimental equipment of the present invention, the components and the mounting plate, all the components, and the modules are all detachably connected, which can demonstrate the circuits between the internal functional modules and components of the radar system. Compared with the overall radar experimental system or integrated chip radar transceiver generally used in the prior art, the present invention is refined to a single component, which can achieve deeper principle teaching or learning.

[0029] The radar circuit in the radar experimental equipment of the present invention is detachably fixed by a mounting plate, and different components can be selected and installed in combination according to experimental requirements, and modules or components can be replaced or increased or decreased. The components can be fixed at any position on the mounting plate to adapt to various circuit requirements; the components can be freely arranged according to different circuit connections, which is convenient for simplifying wiring and circuit structure, and realizing teaching or experiments under various circuit modes, with high freedom and strong adaptability.

[0030] The radar experimental equipment of the present invention can accommodate disassembled components and a complete radar circuit through a box design. The components used are lightweight and the entire equipment is easy to carry, so it can be carried to different test environments for radar experiments.

[0031] The box body, mounting plate and components in the utility model are all market shelf products. The box body and mounting plate are simple in structure, easy to produce and process, and have low production cost, which is conducive to reducing teaching costs and promoting and popularizing educational resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Attachment Figure 1 This is a schematic structural diagram of a radar experimental device in one embodiment of the present invention;

[0033] Attachment Figure 2 This is a schematic structural diagram of a radar experimental device in one embodiment of the present invention when no radar circuit is installed;

[0034] Attachment Figure 3 This is a schematic structural diagram of a component provided with a through hole in one embodiment of the present utility model;

[0035] Attachment Figure 4 This is a schematic structural diagram of a component provided with a guide post in one embodiment of the present utility model;

[0036] Attachment Figure 5 This is a schematic structural diagram of the connection of a radar circuit module in one embodiment of the present invention;

[0037] Attachment Figure 6 This is a schematic diagram of the structure of the connection of radar circuit components in one embodiment of the present invention.

[0038] In the figure, 1. box body; 11. box body; 12. box cover; 13. first accommodating space; 14. second accommodating space; 15. lock; 16. handheld part; 17. hinge; 18. support plate; 2. mounting plate; 3. low-frequency circuit module; 31. waveform generating unit; 32. intermediate frequency amplifying unit; 33. signal processing unit; 4. radio frequency circuit module; 41. radar signal generator; 42. power amplifier; 43. power distributor; 44. transmitting antenna; 45. receiving antenna; 46. low-noise power amplifier; 47. mixer; 5. power module; 51. battery; 52. power conversion unit; 6. computer; 7. through hole; 8. guide column. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0042] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection, electrical connection, physical connection, or wireless communication connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0043] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0044] As attached Figure 1-6 As shown, the utility model includes a radar experimental device, including a box 1, a mounting plate 2 and a radar circuit;

[0045] The box body 1 includes a box body 11 and a box cover 12 connected to the top of the box body 11, which is used to accommodate the mounting plate 2 and the radar circuit;

[0046] The mounting plate 2 is disposed within the box body 11. Preferably, the mounting plate 2 is placed horizontally. A first accommodation space 13 is formed between the mounting plate 2 and the box cover 12 for accommodating installed components. A second accommodation space 14 is formed between the mounting plate 2 and the bottom of the box body 11 for preventing disassembly of components. Preferably, a storage bag is provided on the inner wall of the box cover 12 for storing unused cables and other connectors.

[0047] The radar circuit is composed of user-defined connections and can realize functions such as generating continuous wave signals, transmitting radio frequency signals, receiving radar echo signals, and signal processing, and can conduct various radar experiments. It includes a low-frequency circuit module 3, a radio frequency circuit module 4, and a power supply module 5 that can be detachably mounted on the mounting plate 2. The low-frequency circuit module 3, the radio frequency circuit module 4, and the power supply module 5 are detachably mounted, and the modules can be replaced or their distribution can be changed according to experimental requirements.

[0048] Each module includes a plurality of components, which are detachably connected to each other and detachably mounted on the mounting plate 2. Components can be replaced, added or reduced, or the distribution of components can be changed according to experimental requirements.

[0049] The mounting plate 2 and the radar circuit in the present invention can both be accommodated in the box body 1. When the components are mounted on the mounting plate 2, they are located in the first accommodating space 13. Therefore, the entire installed radar circuit can be stored in the box body 1, and the installed radar circuit can be carried to the experimental environment for direct experiments. When the components are in a disassembled state, they can be stored in the second accommodating space 14 under the mounting plate 2, without the need to find another location for placement. The space can also be used to accommodate spare or replacement components. The radar experimental equipment provided by the present invention is easy to carry and easy to use.

[0050] The components of the present invention are detachably connected to the mounting plate 2, between all components, and between modules, so that the circuits between functional modules and components within the radar system can be displayed. Compared with the integral radar experimental system or integrated chip radar transceiver generally used in the prior art, the present invention is refined to a single component, which can achieve deeper principle teaching or learning; the radar circuit is detachably fixed through the mounting plate 2, and different component combinations can be selected and installed according to experimental requirements, and modules or components can be replaced or increased or decreased. The components can be fixed at any position on the mounting plate 2 to meet various circuit requirements; the components can be freely arranged according to different circuit connections, which is convenient for simplifying wiring and circuit structure, and realizing teaching or experiments under various circuit modes, with high freedom and strong adaptability.

[0051] The components used in the present invention are all market shelf products. The box body 1 and the mounting plate 2 have simple structures, are easy to process, and have low production costs, which is beneficial to reducing teaching costs and promoting and popularizing educational resources.

[0052] In a preferred embodiment, mounting plate 2 is a wooden board. Components are preferably provided with threaded holes along their edges, and screws or bolts are used to mount the components to mounting plate 2. This embodiment provides low cost for mounting plate 2, and since the wooden board lacks pre-set mounting holes, the component installation positions are not restricted by the locations of pre-set mounting holes. Components can be freely mounted anywhere on mounting plate 2, providing a high degree of experimental freedom. Screws or bolts securely attach components to mounting plate 2, ensuring secure attachment even when enclosure 1 is tilted or inverted, making the installed radar circuit easily portable.

[0053] In a preferred embodiment, a plurality of mounting holes distributed in an array are provided on the mounting plate 2 for mounting components. Figure 3 As shown, a through hole 7 is provided on the side of the component, and the component is fixed on the mounting plate 2 by using a pin to pass through the through hole 7 and the mounting hole in sequence; preferably, as shown in the attached Figure 4 As shown, a guide post 8 is provided at the bottom of the component to match the mounting hole, and the component is fixed to the mounting plate 2 by plugging the guide post 8 into the mounting hole. The mounting hole is preset on the mounting plate 2 of this embodiment, which makes the installation of the component more convenient and labor-saving, and can achieve quick disassembly and assembly.

[0054] In a preferred embodiment, as shown in the attached Figure 2 As shown, one side of the mounting plate 2 is hinged to the box body 11, and the opposite side of the mounting plate 2 can be flipped around the hinged side, and the second accommodating space 14 is opened and closed by flipping the mounting plate 2. Preferably, the opposite side of the mounting plate 2 is detachably connected to the box body 11, which can prevent the mounting plate 2 from moving in the box body 1 when transporting the radar experimental equipment.

[0055] In a preferred embodiment, the mounting plate 2 is detachably mounted in the box body 11. When installing components, the mounting plate 2 can be completely removed from the box body 1 and taken out, which makes the operation more convenient. Preferably, buckles are provided on at least two opposite sides of the mounting plate 2 to prevent the mounting plate 2 from moving in the box body 1 when transporting experimental equipment.

[0056] In a preferred embodiment, one side of the box lid 12 is hinged to the box body 11, and the opposite side of the box lid 12 can be flipped around the hinged side to realize the opening and closing of the box body 1. A lock 15 is provided between the opposite side of the box lid 12 and the box body 11 to fasten the box body 11 and the box lid 12 when closed. Preferably, a handle 16 is provided on the outer wall of the box body 1 for easy carrying.

[0057] Specifically, as attached Figure 2 As shown, taking the example that one side of the mounting plate 2 is hinged to the box body 11 and one side of the box cover 12 is hinged to the box body 11, a hinge 17 is provided on one side of the box body 11, and the mounting plate 2 and the box cover 12 are connected to the box body 11 through the above-mentioned hinge 17, so that the mounting plate 2 and the box cover 12 can be flipped, thereby realizing the opening and closing of the box body 1 and the second accommodating space 14, and a plurality of support plates 18 are provided on the opposite side of the box body 11, which are used to support the side of the mounting plate 2 that is not connected to the hinge, so that the mounting plate 2 remains horizontal, and the pressure of the mounting plate 2 prevents the components stored in the second accommodating space from being damaged by the pressure of the mounting plate 2; preferably, in order to ensure the stable connection and flipping effect, two of the above-mentioned hinges 17 are provided on one side of the box body 11; a carrying portion 16 is also provided on the box body 11, and the carrying portion 16 is located in the middle position on the side opposite to the position of the hinge 17, so that the box body 1 can be kept balanced when it is extracted.

[0058] In a preferred embodiment, as shown in the attached Figure 1 and 6 As shown, the low-frequency circuit module 3 includes a waveform generating unit 31, an intermediate frequency amplifying unit 32 and a signal processing unit 33;

[0059] The waveform generating unit 31 is used to generate a triangular wave signal and a square wave signal. Preferably, the waveform generating unit 31 is an XR-2206 function generator. The waveform generating unit 31 has at least two working modes: connecting to the radar signal generator 41 and outputting a triangular wave signal; or connecting to the radar signal generator 41 and outputting a triangular wave signal, and simultaneously connecting to the signal processing unit 33 and outputting a square wave signal as a synchronization signal for radar signal processing;

[0060] The intermediate frequency amplification unit 32 is connected to the radio frequency circuit module 4, and is used to amplify the intermediate frequency echo signal obtained by de-FM mixing and output it as an analog audio signal to the signal processing unit 33. Preferably, the intermediate frequency amplification unit 32 includes an audio amplifier and a low-pass filter connected in sequence, the audio amplifier is connected to the output end of the mixer 47, and the low-pass filter is connected to the input end of the signal processing unit 33;

[0061] The signal processing unit 33 has two input channels, corresponding to the left and right channels respectively, and the two channels share a ground wire. The output end of the signal processing unit 33 is connected to the computer 6 for outputting the processed signal. Preferably, the signal processing unit 33 is a USB sound card, including a dual-channel audio signal acquisition card and a USB interface card connected in sequence. One input channel of the dual-channel audio signal acquisition card is connected to the output end of the intermediate frequency amplification unit 32 for collecting radar echo signals. When the radar circuit outputs a frequency-modulated continuous wave signal, the other input channel is connected to the waveform generation unit 31 for collecting synchronization signals.

[0062] In a preferred embodiment, as shown in the attached Figure 1 and 6 As shown, the radio frequency circuit module 4 includes a radio frequency component and an antenna array that are detachably connected to each other;

[0063] The RF components include a radar signal generator 41, a power amplifier 42, a power splitter 43, a low-noise power amplifier 46, and a mixer 47;

[0064] The antenna array includes a transmitting antenna 44 and a receiving antenna 45. The transmitting antenna 44 is used to transmit radar radio frequency signals to the target, and the receiving antenna 45 is used to receive radar echo signals reflected by the target.

[0065] The radar signal generator 41, power amplifier 42, power splitter 43 and transmitting antenna 44 are detachably connected in sequence, the receiving antenna 45, low-noise power amplifier 46 and mixer 47 are detachably connected in sequence, and the power splitter 43 is also detachably connected to the mixer 47;

[0066] The input end of the radar signal generator 41 is detachably connected to the waveform generating unit 31 , and the output end of the mixer 47 is detachably connected to the intermediate frequency amplifying unit 32 ;

[0067] The radar signal generator 41 is used to receive the triangular wave signal generated by the waveform generating unit 31 and output a radio frequency signal. The radio frequency signal is a single-frequency continuous wave signal or a linear frequency modulated continuous wave signal. Preferably, the radar signal generator 41 is a voltage-controlled oscillator. Preferably, an attenuator is further provided between the voltage-controlled oscillator and the power amplifier 42.

[0068] The power amplifier 42 is used to amplify the radio frequency signal output by the radar signal generator 41, thereby increasing the detection range of the radar;

[0069] The power divider 43 is a passive component. Preferably, the power divider 43 is a two-way power divider, including two output ends, connected to the transmitting antenna 44 and the mixer 47 respectively, for dividing the radio frequency signal amplified by the power amplifier 42 into two paths with equal power, one path is transmitted to the transmitting antenna 44 for transmission, and the other path is transmitted to the mixer 47 as a mixing reference signal for the receiver;

[0070] The transmitting antenna 44 is used to transmit radar signals to the target;

[0071] The receiving antenna 45 is used to receive the radar echo signal reflected by the target;

[0072] The low noise power amplifier 46 is used to amplify the echo signal, thereby increasing the detection range of the radar;

[0073] The mixer 47 is used to down-convert the radar echo signal to an intermediate frequency and output it to the intermediate frequency amplification unit 32. The mixer 47 includes two input ends and one output end. One input end is detachably connected to the output end of the power divider 43, and the other input end is detachably connected to the output end of the low-noise power amplifier 46. The output end of the mixer 47 is detachably connected to the intermediate frequency amplification unit 32.

[0074] In a preferred embodiment, as shown in the attached Figure 1 As shown, in order to facilitate the disassembly and connection between components, the RF components are connected to the antenna array through cables, and the RF components are connected to each other through SMA adapters.

[0075] In a preferred embodiment, as shown in the attached Figure 1 and 6 As shown, the power module 5 includes a battery 51 and a power conversion unit 52;

[0076] The battery 51 is a 12V lithium battery, connected to the power conversion unit 52, and is used to supply power to the radar circuit;

[0077] The power conversion unit 52 is detachably connected to the waveform generating unit 31 , the intermediate frequency amplifying unit 32 , the radar signal generator 41 , the power amplifier 42 , and the low noise power amplifier 46 ;

[0078] Preferably, the power conversion unit 52 is a switch control card, and the power supply voltage output to the waveform generating unit 31 and the intermediate frequency amplifying unit 32 is 12V. The switch control card is provided with 4 probes and switches, and the 4 probes can be controlled by the switch to output 5V voltage, of which 3 probes respectively supply power to the radar signal generator 41, the power amplifier 42 and the low-noise power amplifier 46, and the remaining probe is connected with a DuPont line. The DuPont line has two output ends, one for grounding during circuit testing, and the other outputs a 5V voltage as the control voltage for the radar signal generator 41 to output a single-frequency continuous wave signal. The power conversion unit 52 is also provided with an out2 interface, which outputs a 0-5V voltage as the control voltage for the radar signal generator 41 to output a linear frequency modulation continuous wave signal.

[0079] In a preferred embodiment, the control voltage of the power conversion unit 52 to the radar signal generator 41 is switched by plugging and unplugging the cable, so as to control the radar signal generator 41 to output the control voltage of a single-frequency continuous wave signal or a linear frequency modulation continuous wave signal.

[0080] The radar circuit in this utility model includes at least two operating modes:

[0081] Operating mode 1 is used for target speed measurement. The waveform generating unit 31 is connected to the radar signal generator 41 and outputs a triangular wave signal. The power conversion unit 52 outputs a 5V control voltage to the radar signal generator 41, and the radar signal generator 41 outputs a single-frequency continuous wave signal. In this mode, the waveform generating unit 31 is disconnected from the signal processing unit 33. The signal processing unit 33 only collects the radar echo signal, segments the echo, and performs Doppler transform.

[0082] Working mode 2 is used for moving target detection. The waveform generating unit 31 is connected to the radar signal generator 41 and outputs a triangular wave signal. The power conversion unit 52 outputs a control voltage of 0 to 5V to the radar signal generator 41, and the radar signal generator 41 outputs a linear frequency modulated continuous wave signal. At this time, the waveform generating unit 31 is connected to the signal processing unit 33 and outputs a square wave signal as a synchronization signal to the signal processing unit 33. The signal processing unit 33 simultaneously collects the radar echo signal and the synchronization signal, and uses the synchronization signal to pulse-divide the radar echo signal to complete the clutter cancellation processing.

[0083] It should be noted that an embodiment of the present invention provides a connection and installation method for a radar circuit. Other connection and installation methods can be used between the low-frequency circuit module 3, the radio frequency circuit module 4 and the power supply module 5, and other connection and installation methods can be used between the components in the modules. The modules or components in the radar circuit can be replaced or increased or decreased according to experimental needs.

[0084] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A radar experimental device, characterized in that: It comprises a box (1), a mounting plate (2) and a radar circuit; The box body (1) comprises a box body (11) and a box cover (12) connected to the top of the box body (11); The mounting plate (2) is arranged in the box body (11); a first accommodating space (13) is provided between the mounting plate (2) and the box cover (12) for accommodating installed components; a second accommodating space (14) is provided between the mounting plate (2) and the bottom of the box body (11) for placing disassembled components; The radar circuit comprises a low-frequency circuit module (3), a radio-frequency circuit module (4), and a power module (5) detachably mounted on the mounting plate (2), wherein the low-frequency circuit module (3), the radio-frequency circuit module (4), and the power module (5) are detachably connected to each other; Each module includes a plurality of components, the components are detachably connected to each other, and the components are detachably mounted on the mounting plate (2).

2. The radar experimental equipment according to claim 1, characterized in that: The mounting plate (2) is a wooden board, and the components are mounted on the mounting plate (2) by means of screws or bolts.

3. The radar experimental equipment according to claim 1, characterized in that: The mounting plate (2) is provided with a plurality of mounting holes distributed in an array; A through hole (7) is provided on the side of the component, and a pin is passed through the through hole (7) and the mounting hole in sequence; or a guide column (8) that matches the mounting hole is provided on the bottom of the component, and the component is plugged into the mounting plate (2).

4. The radar experimental equipment according to claim 1, characterized in that: One side of the mounting plate (2) is hinged to the box body (1), and the opposite side can be flipped over and detachably connected to the box body (11); alternatively, the mounting plate (2) can be detachably mounted in the box body (11).

5. The radar experimental equipment according to claim 1, characterized in that: One side of the box cover (12) is hinged to the box body (11), and a lock (15) is provided between the opposite side and the box body (11); A handle (16) is provided on the outer wall of the box body (1).

6. The radar experimental equipment according to any one of claims 1 to 5, characterized in that: The low-frequency circuit module (3) includes a waveform generating unit (31), an intermediate frequency amplifying unit (32) and a signal processing unit (33); The waveform generating unit (31) is used to generate a triangular wave signal and a square wave signal; The intermediate frequency amplification unit (32) is connected to the radio frequency circuit module (4) and is used to amplify the intermediate frequency echo signal obtained by frequency modulation mixing and output it as an analog audio signal to the signal processing unit (33).

7. The radar experimental equipment according to claim 6, characterized in that: The radio frequency circuit module (4) comprises a radio frequency component and an antenna array that are detachably connected to each other; The radio frequency component includes a radar signal generator (41), a power amplifier (42), a power divider (43), a low noise power amplifier (46) and a mixer (47); The antenna array includes a transmitting antenna (44) and a receiving antenna (45); The radar signal generator (41), the power amplifier (42), the power distributor (43) and the transmitting antenna (44) are sequentially detachably connected, the receiving antenna (45), the low-noise power amplifier (46) and the mixer (47) are sequentially detachably connected, and the power distributor (43) is also detachably connected to the mixer (47); The input end of the radar signal generator (41) is detachably connected to the waveform generating unit (31), and the output end of the mixer (47) is detachably connected to the intermediate frequency amplifying unit (32).

8. The radar experimental equipment according to claim 7, characterized in that: The RF components are connected to the antenna array via a cable, and the RF components are connected to each other via SMA adapters.

9. The radar experimental equipment according to claim 7, characterized in that: The power module (5) includes a battery (51) and a power conversion unit (52); The battery (51) is detachably connected to the power conversion unit (52); The power conversion unit (52) is detachably connected to the waveform generating unit (31), the intermediate frequency amplifying unit (32), the radar signal generator (41), the power amplifier (42), and the low-noise power amplifier (46).

10. The radar experimental equipment according to claim 9, characterized in that: By switching the control voltage supplied from the power conversion unit (52) to the radar signal generator (41), the type of the continuous wave signal output by the radar signal generator (41) is switched.

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