CN104683036B - A kind of many source laser binary phase modulation and demodulation device and methods - Google Patents
A kind of many source laser binary phase modulation and demodulation device and methods Download PDFInfo
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- CN104683036B CN104683036B CN201510127325.0A CN201510127325A CN104683036B CN 104683036 B CN104683036 B CN 104683036B CN 201510127325 A CN201510127325 A CN 201510127325A CN 104683036 B CN104683036 B CN 104683036B
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Abstract
The invention discloses a kind of many source laser binary phase modulation and demodulation device and methods, wherein device includes binary phase modulate emission device and binary phase demodulation reception device, binary phase modulate emission device includes more than two LASER Light Sources of different wave length and is connected to the modulates information master controller for controlling LASER Light Source per luminescent composition in a flash with LASER Light Source, binary phase demodulation reception device includes laser-sensitive unit and is connected to recognize that the information for the LASER Light Source luminescent composition that the laser-sensitive unit is received demodulates master controller with laser-sensitive unit.The present invention represents that unit contrasts the information flow of collection and data set by signal, the light source for providing corresponding modulating is combined, carry out transient state information expression, information set in advance is sent on follow-up signal processing unit by receiving unit by laser intelligence transmitting element by reception, determination step simultaneously, so as to realize the multi-source binary phase modulation and demodulation of signal.
Description
Technical field
The present invention relates to Laser Transmission binary phase modulation and demodulation engineering device technique field, especially efficient extended binary phase
Position modulation and demodulation device and method.
Background technology
Modulating and demodulating signal mode is to be related to the efficiency that information is transmitted in media as well, and research at present is concentrated mainly on ultra-wide
Band and MIMO (MIMO system) etc., Main Means are to realize signal high efficiency of transmission by radio or laser.It is quick effective
Ground transmits information, and resource used in reduction information transfer can make limited bandwidth resources be fully utilized, however, face
To the transmission efficient modulation method and apparatus research and development of short-range laser intelligence or one piece of blank, special test environment and set
Detection and information exchange under standby running environment are safety in production, the necessary links for ensureing rescue, reduce any one and are transmitted across
Influence of the journey to other transmitting procedures, with important economic and technical effect.
With the development and application of sensor technology, from the sensor of initial single channel to modern multichannel light, electricity,
The sensors such as sound, the transinformation accordingly obtained also accordingly increases.However, any efficient information modulation-demodulation technique, has
Its precision and measurement are limited to, and signal is by environmental disturbances, to a variety of unlike signal generators and sensor from Same Scene,
Because its signal generator is identical with measuring principle with the type of sensor, even if there is interference, acquired information gap DRS
Degree is larger.
The content of the invention
The primary and foremost purpose of the present invention is that providing one kind includes multiple LASER Light Sources, multiple photosensitive receiving units, and multi-source swashs
Light binary phase modulation and demodulation apparatus and method.
To achieve the above object, present invention employs following technical scheme：
A kind of many source laser binary phase modulation and demodulation devices, including binary phase modulate emission device and binary phase
Demodulate reception device, it is characterised in that：The binary phase modulate emission device includes more than two laser of different wave length
Light source and the modulates information master control for being connected to control the every luminescent composition in a flash of the LASER Light Source with the LASER Light Source
Device processed, the binary phase demodulation reception device includes the laser for being used to receive the LASER Light Source luminescent composition more than two
Sensing unit and it is connected to recognize that the LASER Light Source that the laser-sensitive unit is received lights with the laser-sensitive unit
The information demodulation master controller of combination.
The laser-sensitive unit is located on the receiving surface of a receiving unit body, is set in front of the laser-sensitive unit
There is narrow band filter slice, described information demodulation master controller includes cell controller and signal differentiates detector, the laser-sensitive
The output end of unit differentiates that the input of detector is connected by cell controller and signal.
The laser occurs source unit and uses LD LASER Light Sources.
The laser-sensitive unit is photodiode.
A kind of many source laser binary phase modulation and demodulation methods, it is characterised in that：Including phase-modulating step and phase
Demodulation step, the phase-modulating step is contrasted the information flow of collection and data set by signal modulation master controller, is provided pair
The LASER Light Source luminescent composition that should be modulated, carries out transient state information expression；The phase demodulating step demodulates main control by information
The LASER Light Source luminescent composition that device is received to laser-sensitive unit carries out the demodulation for judging to realize signal.
The signal demodulation step specific method is：
1), signal modulation master controller calculates according to information flow and EBPSK modulation systems and obtains moment multi-source LASER Light Source
Transmitting allocation plan；
2), signal modulation master controller carries out signal transmission according to allocation plan to multi-source Laser emission group, specific to every
Individual LASER Light Source, judges whether enter line light source transmitting in this moment according to allocation plan, if the determination result is YES, then starts laser
Light source；Otherwise any operation is not done.
The phase demodulating step specific method is：Whether corresponding wavelength in laser-sensitive unit judges emitter
In this instantaneous transmission laser, if the determination result is YES, then signal differentiates that the output voltage of detector changes, if judged result
It is no, then maintains to differentiate that the output voltage of detector is constant；Information demodulates master controller according to differentiation detector output voltage
Situation of change carries out transient optical judgement, and transient optical judged result is converted into information combination.
Compared with prior art, the present invention carries out permutation and combination using modulation master controller end to N number of LASER Light Source, if
Using N number of light source, each LASER Light Source has transmitting and does not launch two states, altogether with 2NConfiguration mode is planted, is represented once
Modulate the information that pulse is represented.EBPSK modulation has ultra-narrow band feature, and the constant feelings of maximum rate are modulated in small laser light source
Under condition, multi-source mode can improve the information content of transmission.
The present invention is using modulation /demodulation design, with lightweight, and information transfer efficiency is high, and small volume is portable excellent
Point.
Brief description of the drawings
Fig. 1 is apparatus of the present invention schematic diagram；
Fig. 2 is apparatus of the present invention schematic diagram；
Fig. 3 is multi-source LASER Light Source modulates information schematic diagram；
Fig. 4 is multi-source LASER Light Source information correspondence schematic diagram；
Fig. 5 is operational process schematic diagram of the invention.
Embodiment
A kind of many source laser binary phase modulation and demodulation apparatus and method, including phase-modulation emitter 1 and phase
Reception device 2 is demodulated, referring to Fig. 1.Wherein modulate emission device includes the laser occurring source of multiple different wave lengths, these emission sources
Arranged for interval at position is uniformly distributed emitter is multiple, its input is signal stream, represents that unit is sent out with laser by signal
Source of students is connected, and wavelength includes 532nm, 650nm, 1064nm, 780nm, etc..
It is located on receiving unit body on receiving surface and multiple laser-sensitive units is installed, in front of each laser-sensitive unit
There is narrow band filter slice, laser-sensitive unit output end differentiates that the input of detector is connected with by cell controller and signal,
Signal differentiates that the output end of detector is connected by interface with signal transacting end.
Laser occurs source unit and uses LD LASER Light Sources.Laser-sensitive unit uses photodiode.
Many source laser binary phase modulator approaches, the present invention represents unit by the information flow of collection and data set pair by signal
Than the light source for providing corresponding modulating is combined, and carries out transient state information expression, while receiving unit sends single by laser intelligence
Information set in advance is sent on follow-up signal processing unit by member by reception, determination step, so as to realize signal
Multi-source binary phase modulation and demodulation.
Many source lasers independently of one another, are worked using EBPSK modulation systems.
Extended binary phase shift keying (the EBPSK of each light source：Extended Binary Phase Shift Keying)
Modulation is defined as follows：
g0(t)=Asin2 π fcT, 0≤t ＜ T
Wherein, g0And g (t)1(t) modulation waveform of code element " 0 " and " 1 " is represented respectively；Code-element period T=N/fcIt continue for N
>=1 carrier cycle, the modulation time span τ=K/f of " 1 " code elementcIt continue for the N number of carrier cycles of K ＜；Carrier modulation is because of modulation
Time width and different, τ：T=K：N can be described as " modulation duty cycle ".EBPSK modulated signals have in short-term except the section start in data " 1 "
Outside anti-phase and amplitude A+B saltus step, remaining is all continuous sine wave, and this helps to make its energy concentrate at carrier frequency.
Modulate master controller end and permutation and combination is carried out to multiple LASER Light Sources, if using 10
Light source is then：
Wherein 10 represent 10 lasing fluorescence light sources, and 2 represent that each LASER Light Source has transmitting and do not launch two states,
1024 indicate 1024 kinds of configuration modes, represent the information that primary modulation pulse is represented.It is combined as schematically shown in Figure 3, wherein A,
Light source representated by B, C, D, E, F, G, H, I, J is as shown in Figure 4.
As shown in figure 5, many source laser binary phase modulation and demodulation apparatus and method, the system includes the step of following order
Suddenly：
First step power-up initializing；
Second step master controller calculates according to information flow and EBPSK modulation systems and obtains moment multi-source Laser emission configuration side
Case.
3rd step master controller carries out signal transmission according to allocation plan to multi-source Laser emission group, specific to each laser
Light source, judges whether enter line light source transmitting in this moment according to allocation plan, if the determination result is YES, then starts LASER Light Source；
Otherwise any operation is not done；
4th step is in demodulation reception device, and the photodiode after optical filter judges in emitter whether is corresponding wavelength
In this instantaneous transmission laser, if the determination result is YES, then corresponding current voltage is changed, and demodulation master controller is received respectively
The photodiode judged result that wavelength signals sensitivity carries out carrying after information differentiation, optical filter after judging is no, then maintains
Primary current voltage is constant, and demodulation master controller also obtains the photosensitive diode pair LASER Light Source of each wavelength and judged.
In a word, the present invention is by multiple different wave length LASER Light Sources, and permutation and combination is sent out under modulation main control unit instruction
Light, then by the entrained information of light sensor demodulation, all light sources send information according to ultra-narrow band modulation system, designed in advance
Planning information and combination of light sources representation relation, demodulating algorithm will be given at demodulation main control unit and carry out judgement decision-making.The present invention
Using simple designs, small volume is easy to carry.
Claims (6)
1. a kind of phase-modulation and demodulation method based on many source laser binary phase modulation and demodulation devices, wherein many source lasers
Binary phase modulation and demodulation device includes binary phase modulate emission device and binary phase demodulation reception device, the binary
Phase-modulation emitter includes more than two LASER Light Sources of different wave length and is connected to control with the LASER Light Source
Modulates information master controller of the LASER Light Source per luminescent composition in a flash is made, the binary phase demodulation reception device includes
The more than two laser-sensitive unit for being used to receive the LASER Light Source luminescent composition and connect with the laser-sensitive unit
Connect for recognizing that the information for the LASER Light Source luminescent composition that the laser-sensitive unit is received demodulates master controller, its feature exists
In：Including phase-modulating step and phase demodulating step, the phase-modulating step is by signal modulation master controller by collection
Information flow is contrasted with data set, provides the LASER Light Source luminescent composition of corresponding modulating, carries out transient state information expression；The phase solution
Pacing is rapid to demodulate the LASER Light Source luminescent composition progress judgement realization letter that master controller is received to laser-sensitive unit by information
Number demodulation.
2. according to the method described in claim 1, it is characterised in that：The signal demodulation step specific method is：
1）, signal modulation master controller the hair for obtaining moment multi-source LASER Light Source is calculated according to information flow and EBPSK modulation systems
Penetrate allocation plan；
2）, signal modulation master controller according to allocation plan to multi-source Laser emission group carry out signal transmission, specific to it is each swash
Radiant, judges whether enter line light source transmitting in this moment according to allocation plan, if the determination result is YES, then starts laser light
Source；Otherwise any operation is not done.
3. according to the method described in claim 1, it is characterised in that：The phase demodulating step specific method is：Laser-sensitive
Whether corresponding wavelength is in this instantaneous transmission laser in unit judges emitter, and if the determination result is YES, then signal differentiates
The output voltage of detector changes, if judged result is no, maintains to differentiate that the output voltage of detector is constant；Information solution
Adjust master controller to carry out transient optical judgement according to the situation of change for differentiating detector output voltage, and transient optical is judged into knot
Fruit is converted into information combination.
4. according to the method described in claim 1, it is characterised in that：The laser-sensitive unit is located at a receiving unit body
On receiving surface, narrow band filter slice is provided with front of the laser-sensitive unit, described information demodulation master controller includes unit control
Device and signal processed differentiate detector, and the output end of the laser-sensitive unit differentiates detector by cell controller and signal
Input is connected.
5. according to the method described in claim 1, it is characterised in that：The LASER Light Source uses LD LASER Light Sources.
6. according to the method described in claim 1, it is characterised in that：The laser-sensitive unit is photodiode.
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| CN105227244B (en) * | 2015-08-26 | 2017-11-28 | 联想(北京)有限公司 | A kind of signaling method, signal acceptance method, send equipment and receiving device |
| CN108226946A (en) * | 2018-01-23 | 2018-06-29 | 中国航空工业集团公司洛阳电光设备研究所 | Laser range finder and its signal element pedestal |
| CN112453428B (en) * | 2020-11-10 | 2022-07-26 | 北京计算机技术及应用研究所 | Binary channels laser vibration material disk numerical control system |
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