CN106199535A - A kind of method and device producing high-voltage pulse radar signal based on photoinduction switch - Google Patents
A kind of method and device producing high-voltage pulse radar signal based on photoinduction switch Download PDFInfo
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- CN106199535A CN106199535A CN201610517141.XA CN201610517141A CN106199535A CN 106199535 A CN106199535 A CN 106199535A CN 201610517141 A CN201610517141 A CN 201610517141A CN 106199535 A CN106199535 A CN 106199535A
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- pulse
- signal
- photoinduction
- induced laser
- radar signal
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/282—Transmitters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
- G01S7/484—Transmitters
Abstract
The invention discloses a kind of method and device producing high-voltage pulse radar signal based on photoinduction switch.Described method includes: 1) produce induced laser pulse signal, by being divided into two-way after photo-coupler；2) two-way induced laser pulse signal is made to produce forward wave and backward-wave by photoinduction switch；3) by delays time to control module regulation forward wave and the relative time-delay of backward-wave, the radar signal of adjustable pulse width is produced.Described device includes: induced laser control circuit, and the induced laser pulse of generation is output as two-way induced laser pulse signal；Pulse generating circuit, produces the pulse that both direction is contrary, the adjustable radar signal of output pulse width.The present invention has higher stability and repeatability, the radar signal making generation has better quality and the hangover of less waveform, actual detection can adjust Gpr Signal pulsewidth automatically or manually, it is achieved there is high degree of adaptability and optimum resolution detection targetedly.
Description
Technical field
The invention belongs to ground penetrating radar exploration field, be specifically related to a kind of based on photoinduction switch generation high-voltage pulse radar
The method and device of signal.
Background technology
The mechanism utilizing GPR equipment and technology to carry out underground objects detection is by launching high-frequency electromagnetic impulse wave,
Utilize the difference of buried target and surrounding medium electrical parameter, come with the parameter such as time, frequecy characteristic according to echo-signal amplitude
Analyze and infer the information such as the locus of buried target, the degree of depth and size.GPR is a kind of efficient shallow-layer earth thing
Reason Detection Techniques, different from sounding radar, the frequency that GPR uses is generally below the former, and its theoretical research is mainly electromagnetism
Ripple propagation in lossy dielectric, due to the inhomogeneities of medium, anisotropy, strong Decay Rate etc., its complexity is than spy
Empty radar is much greater.Compared with traditional geophysical method, GPR has quick, simple to operate, anti-interference and field
The advantage of aspect that ground is adaptable, detection resolution is high etc., thus this technology is universal once emerge by engineering geophysics circle
Pay attention to.Particularly since 20 century 70s, along with developing rapidly of computer and microelectric technique, GPR is either
At instrument and equipment, or the aspect such as data process is obtained for and generally improves, and its range of application constantly expands, and the most extensively should
For aspects such as geology, engineering, resource, environment, military affairs.
GPR is typically produced circuit, dual-mode antenna, signal acquisition circuit and data by electromagnetic pulse signal and processes
Constitute Deng part.Electromagnetic pulse signal therein generation circuit part is one of nucleus module of GPR, receives for producing
For the electromagnetic pulse signal of second level, electrical pulses generation mode mainly have gas discharge, tunnel diode, mercoid switch and
Avalanche transistor etc..Wherein, it is to utilize mercoid switch that the electromagnetic pulse signal that gas discharge and mercoid switch combine produces principle
Sparking of pipe punctures and recovery characteristics, produces forward position and width is nanosecond, and amplitude is up to the high voltage narrow pulse of kilovolt；And
Mercoid switch is then a kind of high performance high-voltage switch gear, and produced Pulse symmetry is preferable；Tunnel diode pulse generator
Owing to its pulse width is wider and amplitude is the highest so being not to commonly use very much；The repetitive rate of avalanche transistor up to several megahertzs,
The pulse amplitude that response time produces soon is up to volts up to a hundred.Common electromagnetic pulse signal circuit produces circuit half and utilizes half
The multi-stage serial connections such as conductor avalanche diode, snap-off diode realize high pressure radar wave pulse signal, but its pulse produced
Waveform pulse width is fixing, simultaneously due to the difference that there is the parameter difference opposite sex between multiple devices, postpone during multi-stage serial connection
Step and the impact of parasitic parameter, will cause the pulse stretcher of radar pulse waveform, the most also can produce high-voltage pulse signal
Hangover.
Domestic application is to rely on external import in most GPR equipment of Practical Project at present, but from present
Applicable cases from the point of view of, GPR application in engineering sounding there is also the biggest problem and technical bottleneck, first sets
Standby expensive limiting popularizing of GPR equipment and Detection Techniques, another very important reason is equipment
Application and selection be highly dependent on the target characteristic of detection, as different target investigation depth, different target size should select not
Homologous series or the radar of different frequency range；Technically, have the high pressure-burst pulse generation technology of certain repetition rate be based on
The important key of the ground penetrating radar detection technology of pulse signal, different model, GPR its feature correspondence spy of different frequency range
Fixed transmitting radar wave pulsewidth, such as 500MHz wave band impulse radar, the pulsewidth of its correspondence is close to 1 nanosecond；Furthermore, radar detection divides
There is intrinsic contradiction in resolution and investigative range, although the radar of high band has higher resolution, but its penetration depth
Very limited, the saturating degree of depth of general 400MHz is 4 meters, and typical 1.6GHz radar penetration depth only has 0.5 meter.
From the point of view of present circumstances, for radar electromagnetic pulse signal generation module, how to produce have more fast attack time,
And higher stability and repeatability, how to make the radar pulse signal of generation have better quality and less waveform
Hangover is one of current high-resolution radar electromagnetic pulse generation technology problem encountered；How to improve single GPR
Multiple object-detection ability, i.e. realizes single radar equipment and possesses the adjustable function of frequency range, with realize in actual detection towards
The optimum resolution detection of objectives object, is also one of ground penetrating radar exploration is faced instantly key issue.
Summary of the invention
For the problem existing for above-mentioned technology, the invention provides a kind of based on photoinduction switch generation high-voltage pulse thunder
The method reaching signal, it is achieved the high-voltage pulse radar signal of output has the function of adjustable pulse width.
A kind of method producing high-voltage pulse radar signal based on photoinduction switch, including step:
1) induced laser pulse signal is produced, by being divided into two-way after photo-coupler；
2) two-way induced laser pulse signal is made to produce forward wave and backward-wave by photoinduction switch；
3) by delays time to control module regulation forward wave and the relative time-delay of backward-wave, the radar of adjustable pulse width is produced
Signal.
Present invention also offers a kind of device producing high-voltage pulse radar signal based on photoinduction switch, can produce and have
More fast attack time, more high stability and repeated high-voltage electromagnetic pulse signal, and single radar can be solved well
Equipment, without producing multiband adjustable GPR function, is applied to the adjustable pulse width ground penetrating radar system towards detected object,
To realize the high-resolution detection under different depth.
A kind of device producing high-voltage pulse radar signal based on photoinduction switch, including:
1) induced laser control circuit, is output as two-way induced laser pulse signal by the induced laser pulse of generation；
2) pulse generating circuit, produces the pulse that both direction is contrary, the adjustable radar signal of output pulse width.
Described induced laser control circuit includes inducement signal lasing light emitter, photo-coupler and two delays time to control modules；Institute
State inducement signal lasing light emitter and produce induced laser pulse, after photo-coupler, be divided into two-way, divided by two delays time to control modules
Do not control the time delay of this two-way induced laser pulse, finally output two-way induced laser pulse signal.
Described pulse generating circuit, including HVB high voltage bias input module, two photoinduction switches, load matched module, defeated
Go out coupling module；Described HVB high voltage bias input module produces the pulse signal of high level, provides energy for two photoinduction switches,
Two photoinduction switches receive the induced laser pulse signal of induced laser control circuit output, produce transient response, load
Join module for matched load, pulse output coupling module output pulse width adjustable high-voltage pulse radar signal.
Described HVB high voltage bias input module is connected to the common port of two photoinduction switches by microstrip line, it is provided that circuit institute
The high-pressure energy needed, produces the pulse signal of high level, and provides in photoinduction switch needed for photosensitive part generation photoelectric effect
Strong electric field condition.
Said two photoinduction switch is connected with each other with push-pull type structure, to produce pulse signal in opposite direction.
Said two photoinduction switch receives the induced laser pulse signal of induced laser control circuit output, when extremely short
Interior induced laser pulse signal irradiates the photosensitive part of photoinduction switch, and the open and-shut mode of photoinduction switch will be in very short time
Inside change, make circuit produce transient response in very short time.Under induced laser pulse irradiation, two photoinduction switches
Can successively export the contrary impulse wave of both direction (i.e. forward wave and backward-wave), can control defeated by delays time to control module
The forward wave gone out and the relative time-delay of backward-wave, and then the pulsewidth of regulation high-voltage pulse radar signal.
Semiconductor light inducing switch selected by described photoinduction switch.Its constituent material is Group III-V compound semiconductor material
Material.This semi-conducting material has the characteristic that dark electric resistance is high, carrier lifetime is short, carrier mobility is big.Relative to traditional
Avalanche diode or snap-off diode, the radar signal using the radar pulse generation circuit of photoinduction switch to produce has faster
Rise time and higher stability with repeatability, and have better quality and less waveform hangover.
As preferably, photoinduction based on GaAs material switch selected by described photoinduction switch.When having certain energy
When photon injects the quasiconductor of GaAs material, the internal absorbed photon of quasiconductor can produce electron hole pair, its internal resistance
The rapid change injected with laser will occur.
Further preferably, the 1064nm laser selecting photon energy to be 1.16eV is opened as photoinduction based on GaAs material
The control optical signal closed.In the present invention, input is bias high voltage, it is provided that high voltage electric field condition, and making energy gap is 1.42eV's
Effective energy gap of GaAs material reduces, and therefore using photon energy is that the 1064nm laser of 1.16eV is as based on GaAs material
The photoinduction control signal of photoinduction switch.
During described device work based on photoinduction switch generation high-voltage pulse radar signal, inducement signal LASER Light Source produces
Raw induced laser pulse signal, is divided into two-way after photo-coupler, and two-way induced laser pulse signal is respectively by two time delay controls
Molding block controls and regulating time postpones, and the two-way induced laser pulse signal formed controls two photoinduction switches respectively
Open and-shut mode.The photosensitive area of photoinduction switch issues third contact of a total solar or lunar eclipse electrical effect in the irradiation of induced laser pulse signal, makes circuit produce
Transient response.Under the control of delays time to control module, the relative time-delay between two induced laser pulse signals reaches sub-
Nanosecond rank, thus realize the relative time-delay between backward-wave and forward wave and reach subnanosecond class precision.Anti-by regulation
To the relative time-delay between ripple and forward wave, signal waveform is by the rising transition between reverse minimum to forward maximum
Time will change, and the center bin of the transient state waveform of synthesis and the radar pulse signal of synthesis will change.Warp
Overregulate, the radar pulse waveform degree of regulation of formation can be controlled at sub nanosecond precision.
By conceptual design and emulation, determine the time delay between the impulse wave that both direction is contrary and correspond
Synthesis radar signal pulsewidth between relation.In reality measures scene, by the regulation induction of induced laser control circuit
The time delay of laser carries out the control of photoinduction switch triggering time delay, and then the pulsewidth of regulation radar signal, so that the thunder formed
Reach signal and ensure optimal Measurement Resolution in current application scene.
Compared with tradition ground penetrating radar system, the adjustable pulse width radar signal that the present invention can produce, it is possible to produce and have
More fast attack time, more high stability and repeated high-voltage electromagnetic pulse signal, and solve single radar equipment well
Without producing multiband adjustable GPR function, apply the adjustable pulse width ground penetrating radar system towards detected object, it is achieved no
Detect with the high-resolution under the degree of depth.
Accompanying drawing illustrates:
Fig. 1 is that the present invention produces the device schematic diagram of high-voltage pulse radar signal based on photoinduction switch.
Fig. 2 is positive and negative two impulse wave schematic diagrams of apparatus of the present invention output.
Fig. 3 changes the schematic diagram of the radar signal that time delay is formed by apparatus of the present invention.
Fig. 4 changes the spectrum diagram of the radar signal that time delay is formed by apparatus of the present invention.
Detailed description of the invention:
In order to more specifically describe the present invention, below in conjunction with the drawings and the specific embodiments technical side to the present invention
Case is described in detail.
The method producing high-voltage pulse radar signal based on photoinduction switch, including step:
1) produce induced laser pulse signal, be divided into two-way by photo-coupler；
2) two-way induction pulse signal is made to produce forward wave and backward-wave by photoinduction switch；
3) by delays time to control module regulation forward wave and the relative time-delay of backward-wave, the radar of adjustable pulse width is produced
Signal.
As it is shown in figure 1, device based on photoinduction switch generation high-voltage pulse radar signal includes that induced laser controls electricity
Road and pulse generating circuit；Induced laser control circuit includes inducement signal lasing light emitter 1, photo-coupler 2, delays time to control module 3a
With delays time to control module 3b；Pulse generating circuit includes photoinduction switch 5a, photoinduction switch 5b, load matched module 6, high pressure
Bias input module 8, output coupling module 9, connect the microstrip line 10 of each module, signal ground 7a and signal ground 7b.
During specific works, inducement signal lasing light emitter 1 produces induced laser pulse signal, is two through photo-coupler 2 branch
Road, two-way induced laser pulse each exports two after delays time to control module 3a, 3b respectively and has relative time-delay
Induced laser pulse signal 4a, 4b, induced laser pulse signal 4a is used for controlling photoinduction switch 5a, induced laser pulse signal
4b is used for controlling photoinduction switch 5b；HVB high voltage bias input module 8 is received the public affairs of two photoinductions switch 5a, 5b by microstrip line 10
End altogether；Photoinduction switch 5a, 5b are connected with each other with push-pull type structure；The photoinduction switch 5a other end connects signal through microstrip line 10
Ground 7a, the photoinduction switch 5b other end connects load matched module 6, exports radar signal through output coupling module 9 simultaneously.
Photoinduction based on GaAs material switch selected by two photoinduction switches, when the photon with certain energy injects
During the quasiconductor of GaAs material, the internal absorbed photon of quasiconductor will produce electron hole pair, and its internal resistance will occur
The rapid change injected with laser.In this programme, input is bias high voltage, it is provided that high voltage electric field condition, makes the energy gap be
Effective energy gap of the GaAs material of 1.42eV reduces, it is possible to use photon energy is that the 1064nm laser of 1.16eV is as GaAs material
The photoinduction control signal of the photoinduction switch of material.
The photosensitive area of photoinduction switch 5a, 5b is respectively under the irradiation of induced laser pulse signal 4a, 4b, and circuit will produce
Transient response, detailed process is as follows: when induced laser pulse 4a to photoinduction switch 5a effective time, induced laser pulse 4b is to light
Inducing switch 5b is invalid, and now photoinduction switch 5a opens, and photoinduction switch 5b closes, and it is negative that photoinduction switch 5a connects short circuit
Carry, be i.e. directly connected to signal ground 7a, export backward-wave at output coupling module 9；When photoinduction is switched by induced laser pulse 4a
When 5a is invalid, induced laser pulse 4b is effective to photoinduction switch 5b, and now photoinduction switch 5a closes, and photoinduction switch 5b opens
Opening, photoinduction switch 5b connects load matched module 6, and exports forward wave at output coupling module 9.As in figure 2 it is shown, 11 and 12
Being respectively the opposite direction ripple and forward wave produced, 13 is the forward wave 12 time delay relative to backward-wave 11.
The regulation of induced laser control circuit makes the time delay between two induced laser pulse signal 4a, 4b of generation
Reaching subnanosecond rank, when using photoinduction based on GaAs material to switch, photoinduction switch has the highest speed, dynamically
Scope height big, pressure and the feature such as response is stable, make the pulse width of generation can reach picosecond precision, can meet this completely
Conceptual design requirement.
By changing the relative time-delay of two induced laser pulse signal 4a, 4b so that induced laser pulse signal
Relative time-delay between the backward-wave and the forward wave that produce also changes, and has relative time-delay output by two
Backward-wave partly overlaps, and is controlled the overlapping portion of two backward-waves by the time delay controlling induced laser pulse signal
Dividing time width, the radar signal waveform i.e. controlling to synthesize is by the transit time of reverse minimum to forward maximum, thus controls
The width of the radar signal pulse of system output, i.e. achieves the adjustable pulse width of output high-voltage pulse radar signal.
Can in order to verify that technical scheme proposed by the invention can realize the pulsewidth of synthesized radar signal further
Adjust, carried out the simulating, verifying of the program:
As in figure 2 it is shown, by the time delay 13 between two pulses of regulation, under different time delays, will reversely
Ripple and forward wave, with certain delay synthesis, can form radar signal waveform as shown in Figure 3, the radar signal waveform obtained
Being changed the most accordingly by the transit time between reverse minimum to forward maximum, corresponding frequency spectrum is as shown in Figure 4.In Fig. 3, choosing
With the Gaussian pulse of pulse width τ=0.2ns as Gaussian pulse signal produced by simulation present embodiment, control positive and negative two
Relative time delay between individual Gaussian pulse is respectively tshift=0.1ns, tshift=0.6ns, tshift=0.7ns.Wherein, in Fig. 3
Numbering and Fig. 4 in each spectrum waveform in numbering one_to_one corresponding, i.e. Fig. 4 be the frequency spectrum of each radar signal in Fig. 3 respectively.
Relative time-delay between regulation forward wave and backward-wave, can regulate the mid frequency of the radar signal waveform of output.
Simulation results proves, can realize synthesized radar signal waveform well by changing time delay
Mid frequency is adjustable in certain band limits, so that single GPR equipment adapts to more detect scene.
Claims (7)
1. the method producing high-voltage pulse radar signal based on photoinduction switch, it is characterised in that include step:
1) induced laser pulse signal is produced, by being divided into two-way after photo-coupler；
2) two-way induced laser pulse signal is made to produce forward wave and backward-wave by photoinduction switch；
3) by the relative time-delay of delays time to control module regulation forward wave with backward-wave, the radar letter of adjustable pulse width is produced
Number.
2. the device producing high-voltage pulse radar signal based on photoinduction switch, it is characterised in that including:
1) induced laser control circuit, is output as two-way induced laser pulse signal by the induced laser pulse of generation；
2) pulse generating circuit, produces the pulse that both direction is contrary, the adjustable radar signal of output pulse width.
The device of high-voltage pulse radar signal is produced the most according to claim 2, it is characterised in that institute based on photoinduction switch
State induced laser control circuit and include inducement signal lasing light emitter, photo-coupler and two delays time to control modules；Described inducement signal
Lasing light emitter produce induced laser pulse, after photo-coupler, be divided into two-way, by two delays time to control modules control respectively this two
The time delay of road induced laser pulse, finally output two-way induced laser pulse signal.
The device of high-voltage pulse radar signal is produced the most according to claim 2, it is characterised in that institute based on photoinduction switch
State pulse generating circuit, including HVB high voltage bias input module, two photoinduction switches, load matched module, output coupling modules
And connect the microstrip line of each module；Described HVB high voltage bias input module produces the pulse signal of high level, is two photoinductions
Switch provides energy, two photoinduction switches to receive the induced laser pulse signal of induced laser control circuit output, produce temporarily
State responds, and load matched module is used for matched load, pulse output coupling module output pulse width adjustable high-voltage pulse radar letter
Number.
The device of high-voltage pulse radar signal is produced the most according to claim 4, it is characterised in that institute based on photoinduction switch
State HVB high voltage bias input module and be connected to the common port of two photoinduction switches by microstrip line.
The device of high-voltage pulse radar signal is produced the most according to claim 4, it is characterised in that institute based on photoinduction switch
State photoinduction switch and select semiconductor light inducing switch.
The device of high-voltage pulse radar signal is produced the most according to claim 4, it is characterised in that institute based on photoinduction switch
State two photoinduction switches to be connected with each other with push-pull type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610517141.XA CN106199535B (en) | 2016-07-04 | 2016-07-04 | It is a kind of to switch the method and device for generating high-voltage pulse radar signal based on photoinduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610517141.XA CN106199535B (en) | 2016-07-04 | 2016-07-04 | It is a kind of to switch the method and device for generating high-voltage pulse radar signal based on photoinduction |
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| Publication Number | Publication Date |
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| CN106199535A true CN106199535A (en) | 2016-12-07 |
| CN106199535B CN106199535B (en) | 2018-10-02 |
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| CN201610517141.XA Active CN106199535B (en) | 2016-07-04 | 2016-07-04 | It is a kind of to switch the method and device for generating high-voltage pulse radar signal based on photoinduction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519593A (en) * | 2018-03-22 | 2018-09-11 | 电子科技大学 | A kind of asynchronous tracking method based on single station two-frequency CW radar |
| CN112666566A (en) * | 2021-01-14 | 2021-04-16 | 深圳市杉川机器人有限公司 | Laser radar ranging method and device, electronic equipment and storage medium |
| CN115085700A (en) * | 2022-07-01 | 2022-09-20 | 中国人民解放军63660部队 | Solid-state pulse source output waveform delay control device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3846645A (en) * | 1973-10-17 | 1974-11-05 | Westinghouse Electric Corp | Bi-polar pulse generator |
| KR100612820B1 (en) * | 2005-07-28 | 2006-08-21 | 한국전기연구원 | Unipolar and bipolar pulse generator |
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| GM LOUBRIEL等: ""Ground penetrating radar enabled by high gain GaAs photoconductive semiconductor switches"", 《OFFICE OF SCIENTIFIC AND TECHNICAL INFORMATION TECHNICAL REPORTS》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519593A (en) * | 2018-03-22 | 2018-09-11 | 电子科技大学 | A kind of asynchronous tracking method based on single station two-frequency CW radar |
| CN108519593B (en) * | 2018-03-22 | 2021-07-02 | 电子科技大学 | Asynchronous positioning method based on single-station double-frequency continuous wave radar |
| CN112666566A (en) * | 2021-01-14 | 2021-04-16 | 深圳市杉川机器人有限公司 | Laser radar ranging method and device, electronic equipment and storage medium |
| CN115085700A (en) * | 2022-07-01 | 2022-09-20 | 中国人民解放军63660部队 | Solid-state pulse source output waveform delay control device and method |
| CN115085700B (en) * | 2022-07-01 | 2024-04-19 | 中国人民解放军63660部队 | Solid-state pulse source output waveform delay control device and method |
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| Publication number | Publication date |
|---|---|
| CN106199535B (en) | 2018-10-02 |
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