Multifunctional radar signal simulator system

Abstract

The utility model provides a multifunctional radar signal simulator system. The multifunctional radar signal simulator system comprises a multifunctional radar signal simulator body, a main control computer module and a power supply module, wherein the multifunctional radar signal simulator body comprises a mother board module, a signal generation module, a reference source module and a frequency conversion module, the mother board module is provided with a power line interface, a network connection line interface, a radio frequency cable interface and a plurality of bus interfaces, the input end of the power line interface is connected with the output end of the power supply module, and the output end of the network connection line interface is connected with the frequency conversion module. The network connecting line interface is in network connection with a signal instruction output end of the main control computer module; different target signals can be generated by adjusting the parameter information in the signal instruction of the main control computer module so as to test the compatibility and integration effect of the radar system, actual target participation is not needed, the development process of the radar system is accelerated, and time and cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of radar signals, and particularly to a multi-functional radar signal simulator system. Background Art

[0002] A radar uses radio methods to detect targets and determine their spatial positions. Therefore, a radar is also known as "radio positioning". A radar is an electronic device that uses electromagnetic waves to detect targets. The radar emits electromagnetic waves to irradiate the targets and receives their echoes, thereby obtaining information such as the distance, rate of change of distance, azimuth, altitude, etc. from the target to the electromagnetic wave emission point.

[0003] At the present stage, in the development process of radars, a multi-functional radar signal simulator that can simulate various different types of target signals is pursued by people. By adjusting the simulator parameters, the multi-functional radar signal simulator can simulate different target transmission powers, azimuths, and speeds, as well as target signals such as the echo signal intensity and noise of the simulated target, and has a wide range of uses.

[0004] Therefore, there is an urgent need to propose a multi-functional radar signal simulator system, which can generate different target signals by adjusting the simulator parameters to test the compatibility and integration effect of the radar system, without the participation of actual targets, accelerating the development process of the radar system and saving time and costs. Summary of the Utility Model

[0005] Aiming at the technical problem of the lack of a multi-functional radar signal simulator in the prior art that can simulate different target transmission powers, azimuths, and speeds, as well as target signals such as the echo signal intensity and noise of the simulated target by adjusting the simulator parameters, the utility model proposes a multi-functional radar signal simulator system.

[0006] In a preferred embodiment of the utility model, a multi-functional radar signal simulator system is provided. The multi-functional radar signal simulator system includes: a multi-functional radar signal simulator body, a main control computer module, and a power supply module; wherein,

[0007] The multi-functional radar signal simulator body includes:

[0008] A motherboard module, on which a power cord interface, a network connection cable interface, a radio frequency cable interface, and a plurality of bus interfaces are provided. The input end of the power cord interface is connected to the output end of the power supply module, and the network connection cable interface is network-connected to the signal instruction output end of the main control computer module;

[0009] A signal generation module, which is connected to the motherboard module through a bus interface to load signals in the signal generation module that match the signal instructions of the main control computer module. The signals are two DDS signals;

[0010] A reference source module, whose input end is connected to the output end of the signal generation module to modulate the DDS signal to form a baseband signal;

[0011] A frequency conversion module, whose input end is connected to the output end of the reference source module to convert the baseband signal into a radio frequency signal; wherein,

[0012] The reference source module is connected to the motherboard module through a bus interface to load a 100 MHz reference clock signal. The reference source module is also communicatively connected to the signal generation module and the frequency conversion module to provide the 100 MHz reference clock signal to the signal generation module and the frequency conversion module;

[0013] The frequency conversion module transports the radio frequency signal to the motherboard module via a bus interface, and the radio frequency cable interface of the motherboard module completes the output of the radio frequency signal.

[0014] Preferably, the power supply module has an AC / DC unit. The input end of the AC / DC unit of the power supply module inputs 220 V alternating current, and the output end of the AC / DC unit of the power supply module outputs 220 V direct current to the power supply line interface provided on the motherboard module.

[0015] Preferably, the multi-functional radar signal simulator can generate any one of a conventional pulse signal, a frequency agile signal, a PRF stagger signal, a PRF jitter signal, an in-pulse modulation signal, a normal continuous wave signal, a pulse Doppler signal, a linear frequency modulation signal, a non-linear frequency modulation signal, a phase coding signal, and a pulse compression signal according to the signal instructions of the main control computer module.

[0016] Preferably, the frequency range of the radio frequency signal output by the multi-functional radar signal simulator is 6 GHz to 12 GHz.

[0017] Preferably, the frequency accuracy range of the radio frequency signal output by the multi-functional radar signal simulator is -0.1 MHz to 0.1 MHz.

[0018] Preferably, the pulse width range of the radio frequency signal output by the multi-functional radar signal simulator is 0.1 μs to 10,000 μs.

[0019] Preferably, the repetition period range of the radio frequency signal output by the multi-functional radar signal simulator is 1 μs to 10,000 μs.

[0020] Preferably, the in-pulse modulation bandwidth of the RF signal output by the multifunctional radar signal simulator is not less than 50 MHz.

[0021] Preferably, the amplitude of the RF signal output by the multifunctional radar signal simulator is not less than 0 dBm.

[0022] Preferably, the spurious suppression of the RF signal output by the multifunctional radar signal simulator is better than -40 dBc.

[0023] Compared with the prior art, the present utility model can obtain the following beneficial effects:

[0024] The signal generation module of a multifunctional radar signal simulator system of the present application can load signals that match the signal instructions of the main control computer module, and the signals are two DDS signals; the input end of the reference source module is connected to the output end of the signal generation module to modulate the DDS signals to form baseband signals; the input end of the frequency conversion module is connected to the output end of the reference source module to frequency-convert the baseband signals to form RF signals. The multifunctional radar signal simulator can generate any one of conventional pulse signals, frequency-agile signals, PRF stagger signals, PRF jitter signals, in-pulse modulation signals, ordinary continuous wave signals, pulse Doppler signals, linear frequency modulation signals, non-linear frequency modulation signals, phase-coded signals, and pulse compression signals according to the signal instructions of the main control computer module, and it can generate different target signals by adjusting the parameter information in the signal instructions of the main control computer module to test the compatibility and integration effect of the radar system, without the participation of actual targets, which speeds up the development process of the radar system and saves time and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following will further illustrate the above-mentioned characteristics, technical features, advantages and their implementation manners in a clear and understandable manner in combination with the drawings of the preferred embodiments.

[0026] Figure 1 Shows a multifunctional radar signal simulator system in an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further details each aspect of the present utility model.

[0028] Unless otherwise defined or described, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to the described content can be applied to the method of the present utility model.

[0029] Unless otherwise clearly specified and defined, the "or" described in this utility model includes the relationship of "and". The "and" is equivalent to the Boolean logic operator "AND", the "or" is equivalent to the Boolean logic operator "OR", and "AND" is a subset of "OR".

[0030] It can be understood that although terms such as "first", "second", etc. may be used herein to describe different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Therefore, a first element may be referred to as a second element without departing from the teachings of the concept of this utility model.

[0031] In this utility model, the terms "consisting essentially of..." and "consisting of..." are included in the terms "containing", "including" or "comprising".

[0032] Unless otherwise clearly specified and defined, the terms "connected", "communicated with", "connected to" in this utility model should be understood in a broad sense. For example, it may be a fixed connection, or may be connected through an intermediate medium, may be the communication inside two elements or the interaction relationship between two elements. 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.

[0033] For example, if an element (or component) is referred to as being on another element, coupled with another element or connected to another element, then the said one element can be directly formed on, coupled with or connected to the said another element, or there may be one or more intermediate elements between them. On the contrary, if the expressions "directly on...", "directly coupled with..." and "directly connected to..." are used herein, it means that there are no intermediate elements. Other words used to describe the relationship between elements should be interpreted similarly, such as "between..." and "directly between...", "attached" and "directly attached", "adjacent" and "directly adjacent", etc.

[0034] In addition, it should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings. The words "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. It can be understood that herein, these terms are used to describe the relationship of one element, layer or region relative to another element, layer or region as shown in the drawings. Except for the orientations described in the drawings, these terms should also include other orientations of the device.

[0035] Other aspects of this utility model are obvious to those skilled in the art due to the disclosure herein.

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation manners of the present invention will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other implementation manners can also be obtained.

[0037] It should also be noted that the illustrations provided in the following embodiments only schematically illustrate the basic concept of the present application. The drawings only show the components related to the present application, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex. For example, the thickness of the elements in the drawings can be exaggerated for clarity.

[0038] Embodiment 1

[0039] As shown in the Figure 1 accompanying drawings, the present invention realizes a multi-functional radar signal simulator system, and the multi-functional radar signal simulator system includes: a multi-functional radar signal simulator body, a main control computer module 1, and a power supply module 2; wherein,

[0040] The multi-functional radar signal simulator body includes:

[0041] a motherboard module 3, on which a power cord interface, a network connection cable interface, a radio frequency cable interface, and a plurality of bus interfaces are provided. The input end of the power cord interface is connected to the output end of the power supply module 2, and the network connection cable interface is network-connected to the signal command output end of the main control computer module 1;

[0042] a signal generation module 4, which is connected to the motherboard module 3 through a bus interface to load a signal matching the signal command of the main control computer module 1 in the signal generation module 4, and the signal is two-way DDS (Direct Digital Synthesis) signals;

[0043] a reference source module 5, the input end of which is connected to the output end of the signal generation module 4 to modulate the DDS signal to form a baseband signal;

[0044] a frequency conversion module 6, the input end of which is connected to the output end of the reference source module 5 to frequency-convert the baseband signal to form a radio frequency signal; wherein,

[0045] The reference source module 5 is connected to the motherboard module 3 through a bus interface to load a 100 MHz reference clock signal. The reference source module 5 is also communicatively connected to the signal generation module 4 and the frequency conversion module 6 to provide the 100 MHz reference clock signal to the signal generation module 4 and the frequency conversion module 6;

[0046] The frequency conversion module 6 transports the radio frequency signal to the motherboard module 3 via a bus interface, and the radio frequency cable interface of the motherboard module 3 completes the output of the radio frequency signal.

[0047] It should be noted that the DDS signal is an analog signal converted from a digital signal, which facilitates the precise control of frequency, phase, and amplitude.

[0048] As a preferred embodiment, the power supply module has an AC / DC (Alternating Current / Direct Current) unit. The input end of the AC / DC unit of the power supply module inputs 220 V alternating current, and the output end of the AC / DC unit of the power supply module outputs 220 V direct current to the power supply line interface provided on the motherboard module.

[0049] As a preferred embodiment, the multifunctional radar signal simulator can generate any one of a conventional pulse signal, a frequency agile signal, a PRF stagger signal, a PRF jitter signal, an intra-pulse modulation signal, a normal continuous wave signal, a pulsed Doppler signal, a linear frequency modulation signal, a non-linear frequency modulation signal, a phase coding signal, and a pulse compression signal according to the signal instruction of the main control computer module 1.

[0050] As a preferred embodiment, the frequency range of the radio frequency signal output by the multifunctional radar signal simulator is from 6 GHz to 12 GHz.

[0051] As a preferred embodiment, the frequency accuracy range of the radio frequency signal output by the multifunctional radar signal simulator is from -0.1 MHz to 0.1 MHz.

[0052] As a preferred embodiment, the pulse width range of the radio frequency signal output by the multifunctional radar signal simulator is from 0.1 μs to 10000 μs.

[0053] As a preferred embodiment, the repetition period range of the radio frequency signal output by the multifunctional radar signal simulator is from 1 μs to 10000 μs.

[0054] As a preferred embodiment, the intra-pulse modulation bandwidth of the radio frequency signal output by the multifunctional radar signal simulator is not less than 50 MHz.

[0055] As a preferred embodiment, the amplitude of the RF signal output by the multifunctional radar signal simulator is not less than 0 dBm.

[0056] As a preferred embodiment, the spurious suppression of the RF signal output by the multifunctional radar signal simulator is better than -40 dBc.

[0057] Embodiment 2

[0058] The present utility model also realizes a multifunctional radar signal simulator system, and the multifunctional radar signal simulator system includes: a multifunctional radar signal simulator body, a main control computer module 1, and a power supply module 2; wherein,

[0059] The multifunctional radar signal simulator body includes:

[0060] A motherboard module 3, on which a power line interface, a network connection line interface, a RF cable interface, and a plurality of bus interfaces are provided. The input end of the power line interface is connected to the output end of the power supply module 2, and the network connection line interface is network-connected to the signal instruction output end of the main control computer module 1;

[0061] A signal generation module 4, which is connected to the motherboard module 3 through a bus interface to load a signal matching the signal instruction of the main control computer module 1 in the signal generation module 4, and the signal is two-way DDS signals;

[0062] A reference source module 5, the input end of which is connected to the output end of the signal generation module 4 to modulate the DDS signals to form baseband signals;

[0063] A frequency conversion module 6, the input end of which is connected to the output end of the reference source module 5 to frequency-convert the baseband signals to form RF signals;

[0064] A signal processing module, the input end of which is connected to the output end of the frequency conversion module 6 to obtain processed RF signals; wherein,

[0065] The reference source module 5 is connected to the motherboard module 3 through a bus interface to load a 100 MHz reference clock signal, and the reference source module 5 is also communicatively connected to the signal generation module 4 and the frequency conversion module 6 to provide the 100 MHz reference clock signal to the signal generation module 4 and the frequency conversion module 6;

[0066] The signal processing module transports the processed RF signals to the motherboard module 3 through a bus interface, and the processed RF signals are output through the RF cable interface of the motherboard module 3.

[0067] As a preferred embodiment, the signal processing module includes: a switched filter unit, an amplifier unit, and a band-pass filter unit. The switched filter unit, the amplifier unit, and the band-pass filter unit are connected in sequence. The radio frequency signal output by the frequency conversion module 6 is processed by the switched filter unit, the amplifier unit, and the band-pass filter unit to form the processed radio frequency signal.

[0068] Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects described herein can be used to implement the device and / or practice the method. In addition, this device can be implemented and this method can be practiced using other structures and / or functions in addition to one or more of the aspects described herein.

[0069] It should be noted that the above embodiments can be freely combined as needed. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

[0070] All documents mentioned in the present invention are cited herein as references, as if each document was cited separately as a reference. In addition, it should be understood that after reading the above content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. A multifunctional radar signal simulator system, characterized in that: The multifunctional radar signal simulator system comprises: a multifunctional radar signal simulator body, a main control computer module, and a power supply module; wherein, The multifunctional radar signal simulator body comprises: A motherboard module, wherein the motherboard module is provided with a power line interface, a network connection line interface, a radio frequency cable interface, and a plurality of bus interfaces, wherein the input end of the power line interface is connected to the output end of the power module, and the network connection line interface is network-connected to the signal instruction output end of the main control computer module; A signal generating module, wherein the signal generating module is connected to the motherboard module through a bus interface, so as to load a signal matching the signal instruction of the main control computer module into the signal generating module, wherein the signal is a two-channel DDS signal; A reference source module, wherein an input end of the reference source module is connected to an output end of the signal generating module to modulate the DDS signal to form a baseband signal; A frequency conversion module, the input end of which is connected to the output end of the reference source module to convert the baseband signal into a radio frequency signal; wherein, The reference source module is connected to the motherboard module through a bus interface to load a 100 MHz reference clock signal. The reference source module is also communicatively connected to the signal generating module and the frequency conversion module to provide the 100 MHz reference clock signal to the signal generating module and the frequency conversion module. The frequency conversion module transmits the radio frequency signal to the motherboard module via the bus interface, and the radio frequency cable interface of the motherboard module completes the output of the radio frequency signal.

2. A multifunctional radar signal simulator system as claimed in claim 1, characterized in that: The power module has an AC / DC unit, an input end of the AC / DC unit of the power module inputs 220V alternating current, and an output end of the AC / DC unit of the power module outputs 220V direct current to a power line interface provided on the motherboard module.

3. A multifunctional radar signal simulator system as claimed in claim 2, characterized in that: The multifunctional radar signal simulator can generate any one of conventional pulse signals, frequency agile signals, repetition rate difference signals, repetition rate jitter signals, intra-pulse modulation signals, ordinary continuous wave signals, pulse Doppler signals, linear frequency modulation signals, nonlinear frequency modulation signals, phase coded signals, and pulse compression signals according to the signal instructions of the main control computer module.

4. A multifunctional radar signal simulator system as claimed in claim 3, characterized in that: The frequency range of the radio frequency signal output by the multifunctional radar signal simulator is 6 GHz to 12 GHz.

5. A multifunctional radar signal simulator system as claimed in claim 4, characterized in that: The frequency accuracy range of the radio frequency signal output by the multifunctional radar signal simulator is -0.1 MHz to 0.1 MHz.

6. A multifunctional radar signal simulator system as claimed in claim 5, characterized in that: The pulse width range of the radio frequency signal output by the multifunctional radar signal simulator is 0.1 μs to 10000 μs.

7. A multifunctional radar signal simulator system as claimed in claim 6, characterized in that: The repetition period of the radio frequency signal output by the multifunctional radar signal simulator ranges from 1 μs to 10000 μs.

8. A multifunctional radar signal simulator system as claimed in claim 7, characterized in that: The intra-pulse modulation bandwidth of the radio frequency signal output by the multifunctional radar signal simulator is not less than 50 MHz.

9. A multifunctional radar signal simulator system as claimed in claim 8, characterized in that: The amplitude of the radio frequency signal output by the multifunctional radar signal simulator is not less than 0dBm.

10. A multifunctional radar signal simulator system as claimed in claim 9, characterized in that: The spurious suppression of the radio frequency signal output by the multifunctional radar signal simulator is better than -40dBc.

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