CN207586418U - Radar sensing system - Google Patents
Radar sensing system Download PDFInfo
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- CN207586418U CN207586418U CN201721491361.6U CN201721491361U CN207586418U CN 207586418 U CN207586418 U CN 207586418U CN 201721491361 U CN201721491361 U CN 201721491361U CN 207586418 U CN207586418 U CN 207586418U
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Abstract
The utility model is suitable for radar detection technique field more particularly to a kind of radar sensing system.Including：For connecting the Radar interface of radar to be detected, Radar interface connects the radio frequency memory module for storing radar radio frequency, the connection of radio frequency memory module is for handling radar radio frequency and generate the IF process module of intermediate-freuqncy signal, IF process module is also respectively connected with control module and video processing module, control module connects video processing module, Radar interface connects video processing module, IF process module connects Frequency Synthesizer module, Frequency Synthesizer module connects radio frequency processing module, radio frequency processing module connection antenna.After using the above scheme, the time that staff overhauls radar is saved, improves the working efficiency and quality of staff.
Description
Technical field
The utility model belongs to radar detection technique field more particularly to a kind of radar sensing system.
Background technology
Radar contains radar scanning system and fire control system, is by computer aided system, realizes to entire
The process that the synthesis of weapon system efficiently uses generally uses on comprehensive weapon platform such as aircraft, warship, can reality acquisition
The relevant information of situation of battlefield and target；Shooting parameter is calculated, shooting aid decision is provided, controls firepower ordnance firing, assessment
The effect of shooting.
But current radar often will appear the problem of maintenance is not in place when in use, and be not easy root of pinpointing the problems,
Staff is needed to devote a tremendous amount of time to overhaul radar problem, reduces the working efficiency and quality of staff.
Utility model content
In view of this, the utility model embodiment provides a kind of radar sensing system, to solve to need in the prior art
Staff, which devotes a tremendous amount of time, overhauls radar problem, reduces the working efficiency of staff and asking for quality
Topic.
The utility model embodiment provides a kind of radar sensing system, including：For connecting the radar of radar to be detected
Interface, for storing the radio frequency memory module of radar radio frequency, the radio frequency memory module connection is used for for the Radar interface connection
Processing radar radio frequency simultaneously generates the IF process module of intermediate-freuqncy signal, the IF process module be also respectively connected with control module and
Video processing module, the control module connect the video processing module, and the Radar interface connects the video processing mould
Block, the IF process module connect Frequency Synthesizer module, and the Frequency Synthesizer module connects radio frequency processing module, the radio frequency processing
Module connects antenna.
As further technical solution, the radio frequency processing module includes limiting amplifier, frequency converter, modulator, band
Bandpass filter and digital pad, for receiving the limiting amplifier connection frequency converter for carrying out Radar Local-oscillator signal, the change
Frequency device connects the bandpass filter, and the bandpass filter connects the modulator, and the modulator connects the number and declines
Subtract device, the digital pad connects the antenna.
As further technical solution, the IF process module includes DDS units, frequency source, frequency multiplier, frequency conversion
Device, bandpass filter, wave filter, harmonic generator, upconverter and with difference signal arithmetic unit, described in control module connection
DDS units, the DDS units connect the bandpass filter, and the bandpass filter connects the frequency multiplier, and the radio frequency is deposited
Storage module connects the frequency source with the video processing module, and the frequency source connects the frequency multiplier and the harmonic wave respectively
Frequency multiplier described in generator connects the DDS units, and the harmonic generator connects the bandpass filter, the bandpass filtering
Device and the frequency multiplier are all connected with the upconverter, and the upconverter connects the wave filter, and the wave filter connects institute
It states and difference signal arithmetic unit.
As further technical solution, the control module is hand-held PDA controllers.
As further technical solution, the radio frequency processing module includes receiving the logical of the control module instruction
Believe interface and the control word interface for receiving the control module control word.
The utility model embodiment has the beneficial effect that：After using the above scheme, using large scale integrated circuit and high frequency
Integrated system, working band should meet the frequency range of radar, small, light-weight, easy to operate, can simulate more batches simultaneously
Static and moving target, distance, the frequency of simulated target signal, have higher precision, save staff to radar into
The time of row maintenance improves the working efficiency and quality of staff.
Description of the drawings
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing is briefly described needed in description, it should be apparent that, the accompanying drawings in the following description is only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram for the radar sensing system that the utility model embodiment provides；
Fig. 2 is the structure diagram for the radio frequency processing module that the utility model embodiment provides；
Fig. 3 is the structure diagram for the IF process module that the utility model embodiment provides；
Fig. 4 is the structure diagram for the video processing module that the utility model embodiment provides；
Fig. 5 is the structure diagram for the Frequency Synthesizer module that the utility model embodiment provides；
Fig. 6 is the structure diagram for the radio frequency memory module that the utility model embodiment provides.
Specific embodiment
In being described below, in order to illustrate rather than in order to limit, it is proposed that such as tool of particular system structure, technology etc
Body details, to understand thoroughly the utility model embodiment.However, it will be clear to one skilled in the art that there is no these
The utility model can also be realized in the other embodiments of detail.In other situations, omit to well-known system,
The detailed description of device, circuit and method, in case unnecessary details interferes the description of the utility model.
In order to illustrate technical solution described in the utility model, illustrated below by specific embodiment.
As shown in Figure 1, be the structure diagram for the radar sensing system that the utility model embodiment provides, including：For
The Radar interface 1 of radar to be detected is connected, the Radar interface 1 connects the radio frequency memory module 3 for storing radar radio frequency, institute
It states radio frequency memory module 3 to connect for handling radar radio frequency and generating the IF process module 5 of intermediate-freuqncy signal, the IF process
Module 5 is also respectively connected with control module 2 and video processing module 4, and the control module 2 connects the video processing module 4, institute
It states Radar interface 1 and connects the video processing module 4, the IF process module 5 connects Frequency Synthesizer module 6, the Frequency Synthesizer
Module 6 connects radio frequency processing module 8, and the radio frequency processing module 8 connects antenna 7.
Specifically, radio frequency memory module 3 obtains the radiofrequency signal of radar output at this time, and deposited by Radar interface 1
Storage is got off, and control module 2 is then set as needed the speed of target, direction of travel and apart from range, and video is controlled to handle mould
Block 4 generates the target in respective distance, and IF process module 5 is according to the radar radiofrequency signal of storage and the parameter of setting, production
The Doppler frequency shift of raw corresponding speed and with the relevant intermediate-freuqncy signal of radar waveform；Frequency Synthesizer module 6 is then according to setting, mould
Intend radar frequency synthesizer system and generate all kinds of frequency signals, these processed target informations are then sent to radio frequency processing module 8 and are led to
Antenna 7 is crossed to launch, for radar acceptance inspection, can simulate respectively 1~4 different distance, repetition and pulse width movement or
Static radio frequency target uses when carrying out for fire control radar and be powered and check test-run a machine, to examine radar to empty/empty, sky/face single goal
Or the Search/Track function of multiple target state；Can simulate different directions, distance target, for radar and avionics fire control system into
Row crosslinking uses when checking.To ensure the radar sensing system reliably working, modules use relative maturity technology and will
It combines, to improve the overall technology of system level.
In addition, as shown in Fig. 2, in a specific example, the radio frequency processing module includes limiting amplifier, frequency conversion
Device, modulator, bandpass filter and digital pad, for receiving the limiting amplifier connection change for carrying out Radar Local-oscillator signal
Frequency device, the frequency converter connect the bandpass filter, and the bandpass filter connects the modulator, the modulator connection
The digital pad, the digital pad connect the antenna, and radio-frequency module receives the local oscillation signal from radar, through limit
It is divided into two-way after width amplification, the local oscillator as two upconverter (frequency mixer)；From ifd module with Doppler modulation
Intermediate-freuqncy signal is transformed to radio frequency in two upconverter, and then by bandpass filtering, pulse is modulated to by microwave switch, warp
Antenna is transported to after the numerical-control attenuator amplitude of accommodation.The radiofrequency signal of output includes tetra- tunnel of A, B, C, D, wherein each road has independently
Speed, distance, but A and B, C and D are identical respectively in orientation.
In addition, as shown in figure 3, in a specific example, the IF process module include DDS units, frequency source, times
Frequency device, frequency converter, bandpass filter, wave filter, harmonic generator, upconverter and with difference signal arithmetic unit, the control mould
Block connects the DDS units, and the DDS units connect the bandpass filter, and the bandpass filter connects the frequency multiplier,
The radio frequency memory module connects the frequency source with the video processing module, and the frequency source connects the frequency multiplier respectively
The DDS units are connected with frequency multiplier described in the harmonic generator, the harmonic generator connects the bandpass filter, institute
It states bandpass filter and the frequency multiplier is all connected with the upconverter, the upconverter connects the wave filter, the filter
Wave device connects described and difference signal arithmetic unit.Ifd module is according to reference signal, the methods of using DDS, frequency synthesis, generates band
There is the intermediate-freuqncy signal (f0+fd, wherein fd can according to target speed set) of Doppler modulation；It simultaneously will also be according to radio frequency storage unit
The radar radiofrequency signal of storage obtains the information such as working frequency, the phase parameter of radar at this time, and according to the work shape of radar
Doppler signal, radar signal are superimposed by state, form intermediate-freuqncy signal at this time.There are two types of select in the source of reference signal
It selects：Outside reference from airborne radar is coherent pattern；High stable crystal oscillator from system itself, as non-phase
Moduli formula.
In addition, as shown in figure 4, in a specific example, the video control module is by control and interface circuit, number
The compositions such as delay line, signal processing module, pulse generator, communication interface circuit receive the instruction of PDA controllers or panel with
And the working condition of radar, by signal processing module, it is construed as the code needed for each section circuit, the radio frequency processing
Module includes the communication interface for receiving the control module instruction and the control for receiving the control module control word
Word interface.The lock-out pulse that the transmitting pulse (SYNC) of tested radar is generated as signal, the controllable delay line of delayed amount
After export, as the pulse-modulated signal of radio frequency part, be respectively used to each road radio-frequency modulations.Numerical control delay line is totally continuous
Delay line, retardation is related to apart from range and target velocity, is controlled by interface by software, while also according to target
The control word and power control word of DDS module in the output ifd module of speed and corresponding rf frequency and radar, point
Be not sent to the components such as numerical-control attenuator, frequency synthesizer, pulse generator, and control these components in real time, as target range by
Gradually be decreased or increased, under single-frequency point working method, provide high-precision, low noise intermediate frequency and high-frequency signal, be simulator
Output correlation signal provides support.
In addition, as shown in figure 5, in a specific example, the Frequency Synthesizer module is vibrated using with constant temperature crystal
Device provides up low frequency signal source more than 10-9 precision, then using microwave hybrid integrated circuit, respectively by frequency multiplication-amplification-
Crossover assemblies obtain required intermediate frequency and high-frequency signal.Its lower frequency reference signal uses the frequency values identical with radar, maximum
Realize to limit " quasi- coherent " operating mode, specifically used high-precision constant-temperature crystal oscillator, using filter and amplification and
The frequency conversion of different proportion obtains the intermediate frequency and high-frequency signal needed for analog signal, while the reference signal is also outputted to its of system
In its subsystem, the reference signal as this simulator.
In addition, as shown in fig. 6, in a specific example, the operation principle of the radio frequency memory module is basis first
The working frequency tuning local oscillator of radar makes the output of its down coversion fall into base band, enables a system to obtain radar signal, then to obtaining
The radar signal taken is used completes I, Q sampling, and by I, Q signal storage after digitlization in memory by A/D, then according to thunder
The working condition and system requirements reached carries out analytic transformation to signal, and relevant duplication is carried out to the signal of output, reconstructs I, Q base band
Signal exports parameter containing radar waveform to radio frequency system finally by D/A, is exported for simulator.
In addition, in a specific example, the control module is hand-held PDA controllers, can also use hurricane two
It is combined for fpga chip and embedded computer system, the admission to systematic parameter and correlometer is completed by computer system
It calculates, the simulation of other distances, speed is all completed by fpga chip, since these work are completed by a chip, therefore
It can preferably solve the problems, such as using the inconsistent caused target jitter of small scale in circuitry gate delay parameter, and be existing skill
Art, on the market equal selling.
After using the above scheme, using large scale integrated circuit and high frequency integrated system, working band should meet radar
Frequency range, it is small, it is light-weight, it is easy to operate, more batches of static and moving targets can be simulated simultaneously, simulated target signal
Distance, frequency have higher precision, save the time that staff overhauls radar, improve staff's
Working efficiency and quality.
Part that the technical solution of the utility model embodiment substantially in other words contributes to the prior art should
The all or part of technical solution can be embodied in the form of software product, which is stored in one and deposits
In storage media, used including some instructions so that a computer equipment (can be personal computer, server or network
Equipment etc.) or processor (processor) perform each embodiment the method for the utility model embodiment all or part
Step.And aforementioned storage medium includes：It is USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random
Access the various media that can store program code such as memory (RAM, RandomAccess Memory), magnetic disc or CD.
Embodiment described above is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to before
Embodiment is stated the utility model is described in detail, it will be understood by those of ordinary skill in the art that：It still can be with
It modifies to the technical solution recorded in foregoing embodiments or equivalent replacement is carried out to which part technical characteristic；And
These modifications are replaced, the spirit for various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
And range, it should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of radar sensing system, which is characterized in that including：For connecting the Radar interface of radar to be detected, the radar
For storing the radio frequency memory module of radar radio frequency, the radio frequency memory module connects to handle radar radio frequency simultaneously for interface connection
The IF process module of intermediate-freuqncy signal is generated, the IF process module is also respectively connected with control module and video processing module,
The control module connects the video processing module, and the Radar interface connects the video processing module, at the intermediate frequency
Module connection Frequency Synthesizer module is managed, the Frequency Synthesizer module connects radio frequency processing module, and the radio frequency processing module connects antenna.
2. radar sensing system according to claim 1, which is characterized in that the radio frequency processing module includes limited range enlargement
Device, frequency converter, modulator, bandpass filter and digital pad, for receiving the limited range enlargement for carrying out Radar Local-oscillator signal
Device connects frequency converter, and the frequency converter connects the bandpass filter, and the bandpass filter connects the modulator, the tune
Device processed connects the digital pad, and the digital pad connects the antenna.
3. radar sensing system according to claim 1, which is characterized in that the IF process module include DDS units,
Frequency source, frequency multiplier, frequency converter, bandpass filter, wave filter, harmonic generator, upconverter and with difference signal arithmetic unit, institute
It states control module and connects the DDS units, the DDS units connect the bandpass filter, and the bandpass filter connects institute
Frequency multiplier is stated, the radio frequency memory module connects the frequency source with the video processing module, and the frequency source connects respectively
The frequency multiplier connects the DDS units with frequency multiplier described in the harmonic generator, and the harmonic generator connects the band
Bandpass filter, the bandpass filter and the frequency multiplier are all connected with the upconverter, and the upconverter connects the filter
Wave device, the wave filter connect described and difference signal arithmetic unit.
4. radar sensing system according to claim 1, which is characterized in that the control module is controlled for hand-held PDA
Device.
5. radar sensing system according to claim 1, which is characterized in that the radio frequency processing module includes receiving
The communication interface of the control module instruction and the control word interface for receiving the control module control word.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721491361.6U CN207586418U (en) | 2017-11-10 | 2017-11-10 | Radar sensing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721491361.6U CN207586418U (en) | 2017-11-10 | 2017-11-10 | Radar sensing system |
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| CN207586418U true CN207586418U (en) | 2018-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020142893A1 (en) * | 2019-01-08 | 2020-07-16 | 深圳市大疆创新科技有限公司 | Radar access detection method, circuit and movable platform |
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2017
- 2017-11-10 CN CN201721491361.6U patent/CN207586418U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020142893A1 (en) * | 2019-01-08 | 2020-07-16 | 深圳市大疆创新科技有限公司 | Radar access detection method, circuit and movable platform |
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