CN104809944B - A kind of quadrature receiver comprehensive experimental device - Google Patents
A kind of quadrature receiver comprehensive experimental device Download PDFInfo
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- CN104809944B CN104809944B CN201510188668.8A CN201510188668A CN104809944B CN 104809944 B CN104809944 B CN 104809944B CN 201510188668 A CN201510188668 A CN 201510188668A CN 104809944 B CN104809944 B CN 104809944B
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- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
Abstract
The present invention relates to a kind of quadrature receiver comprehensive experimental device, including function circuit board, secondary power supply module, guidance panel；Guidance panel upper surface is provided with input signal interface, the guidance panel bottom surface is provided with output signal interface, the output signal interface is connected with the input of function circuit board, and the power supply output end of the secondary power supply module is connected with the feeder ear of function circuit board；The function circuit board includes：Random noise generation module, signal are added and conversion module, reference signal generation module, orthogonal reference component generation module, frequency mixing module, bandpass filtering modules block, full-wave rectification block, summed square module, integration module, thresholding generation module, thresholding comparison module.The present invention realizes the target echo detection and parameter Estimation function involved by radar, sonar homing system signal procesing in time domain, and opens up autonomous Research-type and the experiment of comprehensive Design formula with this, have greatly expanded the use scope of existing experimental provision.
Description
Technical field
Signal detection and parameter estimation techniques field the present invention relates to application fields such as radar, sonar, communications, specifically
Refer to a kind of quadrature receiver comprehensive experimental device realized with quadrature receiver as core.
Background technology
Target detection and parameter estimation techniques are one of core technologies of precision guided weapon such as guided missile, torpedo, are also phase
Close one of core curriculum of professional domain.Detection of the modern precision guided weapon to target is main with identification to be completed by receiver,
The most commonly used receiver form of current application is quadrature receiver.Realize to target detection and parameter Estimation principle and application
Understanding and grasping is one of basic content that target detection must be grasped with parameter Estimation correlated curriculum.The receipts that how to achieve a butt joint machine
The understanding and grasp of operation principle and process, quadrature receiver operation principle is a crucial ring.Existing correlated curriculum education activities
In use the modes such as theoretical instructions, the derivation of equation substantially for the explanation of quadrature receiver operation principle, lack simplicity intuitively
Experimental provision is demonstrated with process, measured and operated to whole quadrature receiver operation principle, while existing related weapon dress
Standby actual functional capability circuit abnormality is complicated, is not suitable for classroom instruction and uses, and directly affects teaching efficiency.Simple theory is said
Solution is difficult to reach the purpose of students precision guided weapon target detection and method for parameter estimation and principle with the derivation of equation.
The content of the invention
For not enough present in above-mentioned target detection and parameter Estimation related content teaching means, present invention proposition one kind
Simply and easily quadrature receiver comprehensive experimental device is mounted and dismounted, the stage of quadrature receiver signal processing is realized
Displaying, including " it is multiplied --- filtering --- rectification --- thresholding compares summed square --- integration --- ", it is based on for opening up
The signal detection and parameter estimation experiment of quadrature receiver.
The present invention provides a kind of quadrature receiver comprehensive experimental device, including is arranged on the function circuit board in cabinet and two
Secondary source module, and it is arranged on the guidance panel on machine box surface；The guidance panel upper surface is provided with input signal interface,
The guidance panel bottom surface is provided with output signal interface, and the output signal interface connects with the input of function circuit board
Connect, the power supply output end of the secondary power supply module is connected with the feeder ear of function circuit board；The function circuit board includes：With
Machine noise generation module, for providing white Gaussian noise signal；Signal is added and conversion module, for will be input on guidance panel
Sinusoidal signal it is superimposed with the white Gaussian noise signal that random noise generation module is exported, produce comprising noise input believe
Number；Reference signal generation module, for providing square-wave signal, its signal frequency reference signal for needed for quadrature receiver treatment
2 times；Orthogonal reference component generation module, for square-wave signal to be processed, produces the reference letter that two-way phase differs 90 °
Number；Frequency mixing module, the reference signal multiplication for the input signal comprising noise to be differed 90 ° with two-way phase obtains two-way and mixes
Input signal after frequency；Bandpass filtering modules block, for two-way to be mixed after input signal in unrelated frequency range filter, obtain spy
Determine the input signal of frequency range；Full-wave rectification block, the rectified signal for the input signal of setting frequency range to be processed as amplitude limit；It is flat
Square summation module, for the rectified signal of two-way amplitude limit to be processed as the signal all the way with fluctuation；Integration module, for by band
The signal transacting for having fluctuation is a signal for approximate DC；Thresholding generation module, for providing a precision voltage reference
Signal, its magnitude of voltage controls adjustment by the voltage control button on guidance panel；Thresholding comparison module, for by the signal of direct current
It is compared with reference voltage signal, comparative result is measured or shown by guidance panel.
Further, the upper surface of the guidance panel is provided with external electric supply socket, fuse, power switch, dispatch from foreign news agency
Source status indicator lamp, secondary power supply status indicator lamp, signal access socket, four grounded socket, noise setting potentiometer, noise
Access switch, filter configuration band switch, threshold sets potentiometer, output state indicator lamp and at least 15 measuring point terminals.
Further, the random noise generation module utilizes the amplified generation broadband noise of Zener diode punch-through effect
Signal, the amplitude of random noise generation module is by guidance panel adjustment, the random noise generation module output end and signal
It is added and conversion module input between and switch connection is accessed by the noise on guidance panel.
Further, the reference signal generation module produces square-wave signal by single-chip microcomputer, and its signal frequency is by operation
Filter configuration band switch on panel is set, and the frequency is 2 times of reference signal for needed for quadrature receiver treatment.
Further, the orthogonal reference component generation module is the frequency dividing circuit that reverser and J-K flip flop are constituted, and is led to
Cross and signal paraphase and two divided-frequency treatment all the way are produced to single-chip microcomputer, form the reference signal that two-way phase differs 90 °.
Further, the frequency mixing module is made up of analog switch chip, and the input of the frequency mixing module is connected simultaneously
Signal is added and conversion module, reference component generation module, is added and conversion module output signal orthogonal reference component by signal
The output signal of generation module, the common multiplying for realizing input mixed signal and orthogonal reference signal.
Further, the bandpass filtering modules block is made up of LTC1164 chips and periphery configuration resistance, realizes special frequency channel
Bandpass filtering, the full-wave rectification block is made up of bridge-type detector diode and operation amplifier circuit, realizes amplitude limit all-wave
Rectification.
Further, the summed square module is the add circuit of operational amplifier composition, and signal square phase is sought in completion
Plus function, the integration module is the integrating circuit being made up of resistance capacitance, complete to after summed square signal integration fortune
Calculate.
Further, the thresholding generation module is made up of high-accuracy voltage source chip with adjustable potential meter, realizes benchmark
The generation of voltage signal, and threshold voltage output, the thresholding ratio can be adjusted by the threshold sets potentiometer on guidance panel
It is made up of voltage comparator chip compared with module, completes the comparing and output to integrated signal and threshold voltage signal.
Further, the function circuit board and secondary power supply module are bolted on the base plate of cabinet inside,
Guidance panel is connected by electric connection line and connector with quadrature receiver function circuit board, guidance panel pass through electric connection line and
Secondary power supply module is connected.
The operation principle of quadrature receiver comprehensive experimental device of the invention is as follows：
Quadrature receiver comprehensive experimental device carries out step-by-step processing to the signal of outside input, finally intactly reproduces orthogonal
Receiver is to probability-based classification and processing procedure.It is specific as follows：The letter that the outside source accessed by guidance panel is produced
Number, can be by switching control, the random noise with degree of amplitude modulation is superimposed, the two-way for then being produced with experimental provision itself respectively
The reference signal that phase differs 90 ° is mixed, and mixed signal is obtained by the bandpass filtering modules block of knob control centre frequency
To the two-way input signal of special frequency channel, then by full-wave rectification, the input signal of special frequency channel is processed as the rectification of amplitude limit
Signal, then by summed square module, the rectified signal of two-way amplitude limit is processed as the signal all the way with fluctuation, then it is entered
Row Integral Processing, obtains a signal for approximate DC, the adjustable height that the signal and experimental provision inside are provided
Precision voltage reference signal is compared, and finally comparative result is measured or shown by guidance panel.
Quadrature receiver comprehensive experimental device of the invention uses above-mentioned technical proposal, has the following advantages that：
By reference to signal generator module, random noise generation module, quadrature component generation module, frequency mixing module, band logical
Being applied in combination for filtration module, full-wave rectification block, summed square module, integration and thresholding comparison module, completely presents just
Hand over receiver " be multiplied --- filtering --- rectification --- thresholding compares summed square --- integration --- " calculating process, can be with
For the related experiment teaching of quadrature receiver operation principle.
With quadrature receiver comprehensive experimental device as core, by the simple general-purpose instrument such as signal generator and oscillograph
Auxiliary, it is possible to achieve target echo detection and parameter Estimation work(involved by radar, sonar homing system signal procesing in time domain
Can, and the autonomous Research-type such as signal detection, parameter Estimation and receiver performance characteristics measurement and comprehensive Design formula are opened up with this
Experiment, have greatly expanded the use scope of existing experimental provision.
Simple structure of the present invention, easy to operate, Ergonomics design is excellent, possesses high reliability, and convenient disassembly, easily
In maintenance.
Brief description of the drawings
Fig. 1 is structured flowchart of the invention；
Fig. 2 is quadrature receiver function circuit board composition frame chart of the invention；
Fig. 3 is guidance panel schematic diagram of the invention；
Fig. 4 is that the signal of quadrature receiver comprehensive experimental device of the invention flows to schematic diagram.
1- function circuit boards, 2- secondary power supplies module, 3- guidance panels, 4- random noises generation module, 5- signals are added
With conversion module, 6- reference signals generation module, 7- orthogonal reference components generation module, 8- frequency mixing modules, 9- bandpass filtering moulds
Block, 10- full-wave rectification blocks, 11- summed squares module, 12- integration modules, 13- thresholdings generation module, 14- thresholdings compare mould
Block, 15- cabinets, 16- base plates, 17- external electric supply sockets, 18- fuses, 19- power switches, 20- external powers status indicator lamp,
21- secondary power supplies status indicator lamp, 22- signals access socket, 23- grounding receptacles, 24- noises setting potentiometer, 25- noises connect
Enter switch, 26- filter configurations band switch, 27- threshold sets potentiometer, 28- output states indicator lamp, 29- measuring point terminals.
Specific embodiment
Illustrated embodiment describes performance of the invention in detail below in conjunction with the accompanying drawings, but they are not constituted to the present invention
Limitation, it is only for example.Will become clearer and be readily appreciated that by illustrating advantages of the present invention simultaneously.
As shown in Figure 1, Figure 2, Figure 3 shows, quadrature receiver comprehensive experimental device of the invention includes being arranged in cabinet 15
Function circuit board 1 and secondary power supply module 2, and it is arranged on the guidance panel 3 on the face of cabinet 15；Quadrature receiver functional circuit
Plate 1 and secondary power supply module 2 are bolted on the base plate 16 inside cabinet 15, guidance panel 3 by electric connection line and
Connector is connected with function circuit board 1, and guidance panel 3 is connected by electric connection line with secondary power supply module 2, on guidance panel 3
Surface is provided with input signal interface, and the bottom surface of guidance panel 3 is provided with output signal interface, output signal interface and function electricity
The input connection of road plate 1, the power supply output end of secondary power supply module 2 is connected with the feeder ear of function circuit board 1；Functional circuit
Plate 1 includes：Random noise generation module 4, for providing white Gaussian noise signal；Signal is added and conversion module 5, for that will grasp
The sinusoidal signal for making to be input on panel 3 is superimposed with the white Gaussian noise signal that random noise generation module 4 is exported, and generation is included
The input signal of noise；Reference signal generation module 6, for providing square-wave signal, its signal frequency is quadrature receiver treatment
2 times of required reference signal；Orthogonal reference component generation module 7, for square-wave signal to be processed, produces two-way phase phase
Differ from 90 ° of reference signal；Frequency mixing module 8, the reference signal for the input signal comprising noise to be differed 90 ° with two-way phase
Multiplication obtains the input signal after two-way mixing；Bandpass filtering modules block 9, for two-way to be mixed after input signal in it is unrelated
Frequency range is filtered, and obtains the input signal of special frequency channel；Full-wave rectification block 10, for the input signal of setting frequency range to be processed as
The rectified signal of amplitude limit；Summed square module 11, for the rectified signal of two-way amplitude limit to be processed as the letter all the way with fluctuation
Number；Integration module 12, for being a signal for approximate DC by the signal transacting with fluctuation；Thresholding generation module 13, uses
In a precision voltage reference signal is provided, its magnitude of voltage controls adjustment by the voltage control button on guidance panel 3；Thresholding
Comparison module 14, for the signal of direct current and reference voltage signal to be compared, comparative result is surveyed by guidance panel 3
Amount shows.
The upper surface of guidance panel 3 is provided with external electric supply socket 17, fuse 18, power switch 19, external power state
Indicator lamp 20, secondary power supply status indicator lamp 21, signal access socket 22, four grounded socket 23, noise setting potentiometer 24,
Noise accesses switch 25, filter configuration band switch 26, threshold sets potentiometer 27, output state indicator lamp 28 and at least 15
Individual measuring point terminal 29.
Random noise generation module 4 utilizes the amplified generation broadband noise signal of Zener diode punch-through effect, makes an uproar at random
The amplitude of sound generation module 4 is adjusted by guidance panel 3, and the output end of random noise generation module 4 is added with signal and becomes mold changing
Switch 25 is accessed between the input of block 5 by the noise on guidance panel 3 to connect.Reference signal generation module 6 is produced by single-chip microcomputer
Raw square-wave signal, its signal frequency is set by the filter configuration band switch 26 on guidance panel 3, and the frequency is for just
Hand over reference signal needed for receiver treatment 2 times.Orthogonal reference component generation module 7 is that reverser and J-K flip flop are constituted
Frequency dividing circuit, by producing signal paraphase and two divided-frequency treatment all the way to single-chip microcomputer, forms the reference letter that two-way phase differs 90 °
Number.Frequency mixing module 8 is made up of analog switch chip, the input of frequency mixing module 8 connect simultaneously signal be added with conversion module 5,
Reference component generation module 6, is added by signal and believed with the output of the output signal orthogonal reference component generation module 6 of conversion module 5
Number, the common multiplying for realizing input mixed signal and orthogonal reference signal.Bandpass filtering modules block 9 by LTC1164 chips and
Periphery configuration resistance is constituted, and realizes the bandpass filtering of special frequency channel, and full-wave rectification block 10 is by bridge-type detector diode and computing
Amplifier circuit is constituted, and realizes amplitude limit full-wave rectification detection.Summed square module 11 is the add circuit of operational amplifier composition,
The function of signal summed square is sought in completion, and integration module 12 is the integrating circuit being made up of resistance capacitance, completes to summed square
The integral operation of signal afterwards.Thresholding generation module 13 is made up of high-accuracy voltage source chip with adjustable potential meter, realizes benchmark electricity
The generation of signal is pressed, and threshold voltage can be adjusted by the threshold sets potentiometer 27 on guidance panel 3 and exported, thresholding is more electric
Road 14 is made up of voltage comparator chip, completes comparing and output to integrated signal and threshold voltage signal
Use step of the invention is as follows：
(1) full experiment system is occurred by 1 quadrature receiver comprehensive experimental device, 1 two-way oscillograph, 1 signal
Device and 1 universal meter are constituted.Wherein, signal generator is used to produce analog echo signal；Quadrature receiver comprehensive experimental device
Quadrature receiving for carrying out echo-signal is processed；Oscillograph is used to observe the signal waveform in each stage in processing procedure；General-purpose
Table is used for measuring basis voltage.
(2) oscillograph, the power supply of signal generator are connected, start checks equipment state, connection two-way shows after confirming normally
The output signal line of the holding wire of ripple device and all the way signal generator.
(3) after the alternating current 220V power supply of external experimental provision is powered, "~220V " indicator lamp will be lighted, and show external power supply
Normally；
(4) " power supply " switch is connected, you can experimental provision is implemented to power.Interior voltage-stabilized power supply generation ± 12V direct currents
Source (secondary power supply) uses for internal circuit.The power supply state is indicated by "+12V " with " -12V " indicator lamp, and can be by right
The measuring point answered, specific secondary power supply magnitude of voltage is measured using digital multimeter.
(5) target echo signal is produced line amplitude frequency of going forward side by side to adjust by external signal generator, by the way that " signal connects
Entering " socket is introduced, and can measure and observe by " measuring point 1 " jack.The target echo signal of input is clipped to 9Vpp,
In case major structure is damaged into subsequent conditioning circuit；
(6) experimental provision itself produces white Gaussian noise signal, and its amplitude is adjusted by " noise setting " potentiometer,
10~20 times of multiple of adjustment.Noise signal after amplification is switched by " noise access " and controls whether to access；Once connect " noise
Access " switch, can be measured by " measuring point 2 " and observation noise signal.
(7) the simulated target echo-signal of input realizes linear, additive, simulation interference with noise signal in experimental provision
Target echo signal under environment, can observe reverberation Mixed design waveform by " measuring point 3 ".
(8) reference signal is produced by the Single-chip Controlling in experimental provision, and its frequency can be by " filter configuration " wave band
Switch setting.Operation principle based on switching mixer, reference signal here is 90 ° of square-wave signal, its waveform and transposition
Waveform afterwards, can respectively pass through " measuring point 4 " and " measuring point 5 " observation.
(9) input hybrid waveform is divided into two-way, and differing 90 ° of two-way reference signal with phase respectively is carried out at switch mixing
Reason, the two-way waveform after mixing can respectively pass through " measuring point 6 " and " measuring point 7 " observation；Two paths of signals fundamental frequency will keep 90 ° of phases
Difference.
(10) signal after being mixed is 5kHz by centre frequency, and bandpass filtering and enhanced processing with a width of 150Hz are obtained
To low frequency signal.Two-way waveform after filter amplifying processing can respectively pass through " measuring point 8 " and " measuring point 9 " observation；Two paths of signals is still
90 ° of phase differences will be kept.
(11) bandpass signal after filter and amplification is seen by after full-wave rectification, can respectively pass through " measuring point 10 " and " measuring point 11 "
Examine；Alternating component in two paths of signals will keep 90 ° of phase differences.
(12) two paths of signals to orthogonal processing carries out summed square, and its output waveform can be observed by " measuring point 12 ".
(13) signal after summed square is integrated and enhanced processing, obtains orthogonal processing result, its waveform is tool
There is the direct current signal of certain amplitude, can be observed by " measuring point 13 "；
(14) experimental provision is based on high-precision voltage reference chip and produces threshold level, and can be by " threshold sets " current potential
Meter continuously sets the threshold level value, can be used universal meter to measure threshold level signal by " measuring point 14 ", and observe adjustment door
The result of limit.
(15) signal and threshold signal of the experimental provision inside after high-accuracy voltage comparator is realized to orthogonal processing
Comparing, its result is 0V low level outputs or+12V high level outputs, and its state can be shown by " output indication " lamp, and
Signal output waveform can be observed by " measuring point 15 ".
Below so that the target-seeking systems such as target-seeking, the torpedo sonar homing of missile-radars carry out active probe to target as an example, explanation
Operation principle of the invention.Due to channel and the modulating action of target, target information is carried in reflection echo, target-seeking system connects
Receipts machine carries out Detection and Parameter Estimation of the space time treatment realization to target by being received back to ripple.For different
Target type and environmental condition, people establish plurality of target scattering model, wherein slow fluctuating point target model as it is a kind of most
Model with practical value and be used widely.The form of slow fluctuating point target model is s (t)=Acos (ω t+ θ), and it is special
Point is that the amplitude and phase of echo-signal are random, while with time delay and Doppler frequency shift.Wherein random amplitude A takes
From rayleigh distributed, random phase θ is obeyed and is uniformly distributed.
It is theoretical according to statistic mixed-state, detect that random amplitude and random phase target are (slow to rise and fall under white Gaussian noise background
Point target) optimum receiver be quadrature receiver, this is also that all kinds of target-seeking systems realize target detection and parameter Estimation application
Most commonly used receiver form.Its general principle is：For the target echo signal with random amplitude and random phase, profit
Triangular transformation formula is used, it two orthogonal signalling can be decomposed into, the amplitude of this two-way orthogonal signalling is respectively amplitude difference
It is Acos θ and Asin θ, is random；It is nonrandom and phase is respectively ω t and ω t+ pi/2s.For two such amplitude
The nonrandom signal of phase, can be processed realize optimization process respectively with two-way cross-correlator at random.Due to what is decomposited
Two paths of signals is orthogonal, therefore corresponding reference signal also must be orthogonal, therefore generates the structure of quadrature receiver,
See Fig. 4.
Left-half is exactly to complete the computing cross-correlation to two-way quadrature component in Fig. 4.But only so not enough, because
For the amplitude of two-way quadrature component also contains item relevant with random phase as cos θ and sin θ respectively.It is random in order to eliminate
The influence of phase, a square summation process is carried out by the output of two-way correlator, the receiver output Z for so finally obtaining2With regard to complete
It is entirely unrelated with random phase, it is achieved that the optimization process under the conditions of random phase.According to quadrature receiver mathematical table
Up to formula and structure type, its basic operation includes that phase differs the generation of 90 ° of two-way reference signal, input hybrid waveform and ginseng
The multiplication of signal, integration, summed square, thresholding is examined to compare.Directly according to " multiplication --- the product of substantially orthogonal receiver
Point --- summed square --- thresholding compares " process carries out circuit and reappears its function.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of the technology of the present invention principle is not departed from, some improvements and modifications can also be made, these improvements and modifications
Also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of quadrature receiver comprehensive experimental device, it is characterised in that：Including the function circuit board being arranged in cabinet (15)
(1) and secondary power supply module (2), and it is arranged on the guidance panel (3) on cabinet (15) face；Guidance panel (3) upper table
Face is provided with input signal interface, and guidance panel (3) bottom surface is provided with output signal interface, the output signal interface
Input with function circuit board (1) is connected, power supply output end and the function circuit board (1) of the secondary power supply module (2)
Feeder ear is connected；The function circuit board (1) includes：Random noise generation module (4), for providing white Gaussian noise signal；
Signal is added and conversion module (5), for the sinusoidal signal and random noise generation module (4) that will be input on guidance panel (3)
The white Gaussian noise signal of output is superimposed, produces the input signal comprising noise；Reference signal generation module (6), for carrying
For square-wave signal, its signal frequency is 2 times of reference signal for needed for quadrature receiver treatment；Orthogonal reference component generation module
(7), for square-wave signal to be processed, the reference signal for producing two-way phase to differ 90 °；Frequency mixing module (8), for that will wrap
The reference signal multiplication that the input signal of Noise differs 90 ° with two-way phase obtains the input signal after two-way mixing；Band logical
Filtration module (9), for two-way to be mixed after input signal in unrelated frequency range filter, obtain special frequency channel input letter
Number；Full-wave rectification block (10), the rectified signal for the input signal of setting frequency range to be processed as amplitude limit；Summed square module
(11), for the rectified signal of two-way amplitude limit to be processed as the signal all the way with fluctuation；Integration module (12), for that will carry
The signal transacting of fluctuation is a signal for approximate DC；Thresholding generation module (13), for providing a high precision reference electricity
Pressure signal, its magnitude of voltage controls adjustment by the voltage control button on guidance panel (3)；Thresholding comparison module (14), for inciting somebody to action
The signal of direct current is compared with reference voltage signal, and comparative result is measured or shown by guidance panel (3).
2. quadrature receiver comprehensive experimental device according to claim 1, it is characterised in that：The guidance panel (3)
Upper surface is provided with external electric supply socket (17), fuse (18), power switch (19), external power status indicator lamp (20), two
Secondary source status indicator lamp (21), signal access socket (22), four grounded socket (23), noise and set potentiometer (24), make an uproar
Sound access switch (25), filter configuration band switch (26), threshold sets potentiometer (27), output state indicator lamp (28) and
At least 15 measuring point terminals (29).
3. quadrature receiver comprehensive experimental device according to claim 2, it is characterised in that：The random noise produces mould
Block (4) utilizes the amplitude of the amplified generation broadband noise signal of Zener diode punch-through effect, random noise generation module (4) to lead to
Guidance panel (3) adjustment is crossed, random noise generation module (4) output end is added and conversion module (5) input with signal
Between switch (25) accessed by the noise on guidance panel (3) connect.
4. quadrature receiver comprehensive experimental device according to claim 2, it is characterised in that：The reference signal produces mould
Block (6) produces square-wave signal by single-chip microcomputer, and its signal frequency is by the filter configuration band switch (26) on guidance panel (3)
Set, the frequency is 2 times of reference signal for needed for quadrature receiver treatment.
5. quadrature receiver comprehensive experimental device according to claim 1 and 2, it is characterised in that：The orthogonal reference point
The frequency dividing circuit that amount generation module (7) is constituted for reverser and JK flip-flop, signal paraphase all the way is produced by single-chip microcomputer
With two divided-frequency treatment, the reference signal that two-way phase differs 90 ° is formed.
6. quadrature receiver comprehensive experimental device according to claim 1 and 2, it is characterised in that：The frequency mixing module (8)
It is made up of analog switch chip, the input of the frequency mixing module (8) connects signal and is added and conversion module (5), reference simultaneously
Component generation module (6), the output with conversion module (5) output signal orthogonal reference component generation module (6) is added by signal
Signal, the common multiplying for realizing input mixed signal and orthogonal reference signal.
7. quadrature receiver comprehensive experimental device according to claim 1 and 2, it is characterised in that：The bandpass filtering mould
Block (9) is made up of LTC1164 chips and periphery configuration resistance, realizes the bandpass filtering of special frequency channel, the full-wave rectification block
(10) it is made up of bridge-type detector diode and operation amplifier circuit, realizes amplitude limit full-wave rectification detection.
8. quadrature receiver comprehensive experimental device according to claim 1 and 2, it is characterised in that：The summed square mould
The function of signal summed square is sought in the add circuit that block (11) is constituted for operational amplifier, completion, and the integration module (12) is
The integrating circuit being made up of resistance capacitance, completes the integral operation to signal after summed square.
9. quadrature receiver comprehensive experimental device according to claim 2, it is characterised in that：The thresholding generation module
(13) it is made up of with adjustable potential meter high-accuracy voltage source chip, realizes the generation of reference voltage signal, and can be by operating surface
Threshold sets potentiometer (27) regulation threshold voltage output on plate (3), the thresholding comparison module (14) is by voltage comparator
Chip is constituted, and completes comparing and output to integrated signal and threshold voltage signal.
10. quadrature receiver comprehensive experimental device according to claim 1, it is characterised in that：The function circuit board (1)
It is bolted on the internal base plate (16) of cabinet (15) with secondary power supply module (2), guidance panel (3) is by electrical connection
Line and connector are connected with quadrature receiver function circuit board (1), and guidance panel (3) is by electric connection line and secondary power supply module
(2) it is connected.
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| CN201510188668.8A CN104809944B (en) | 2015-04-21 | 2015-04-21 | A kind of quadrature receiver comprehensive experimental device |
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| CN106556829B (en) * | 2016-11-03 | 2020-05-15 | 哈尔滨工程大学 | Underwater target three-dimensional synchronous positioning receiver based on frequency hopping three-pulse coding |
| CN110940857A (en) * | 2019-12-13 | 2020-03-31 | 西安锐驰电器有限公司 | Spectrum parameter detection method |
| CN112270877A (en) * | 2020-09-29 | 2021-01-26 | 中国人民解放军海军工程大学 | Beam forming experiment system, experiment method and high-resolution detection equipment |
| CN112394419B (en) * | 2020-12-10 | 2022-12-30 | 中国人民解放军海军工程大学 | Experimental device for initiative electromagnetic detection signal processing under water |
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| CN2134659Y (en) * | 1992-04-14 | 1993-05-26 | 重庆钢铁公司 | Multifunctional evolution integrating device checking instrument |
| RU2083997C1 (en) * | 1994-02-15 | 1997-07-10 | Акционерное общество открытого типа "Научно-исследовательский институт радиостроения" | Target elevation tracking system |
| EP1742082A4 (en) * | 2004-02-09 | 2010-04-07 | Anritsu Corp | Radar apparatus |
| RU2309430C1 (en) * | 2006-02-21 | 2007-10-27 | Открытое акционерное общество "Концерн "Гранит-Электрон" | Single-pulse radar system |
| US8086208B2 (en) * | 2008-12-05 | 2011-12-27 | Passif Semiconductor Corp. | Passive wireless receiver |
| CN201788280U (en) * | 2009-11-13 | 2011-04-06 | 南京恩瑞特实业有限公司 | Skyborne phased array Doppler meteorological radar |
| CN202923624U (en) * | 2012-06-08 | 2013-05-08 | 张洪羿 | Radar monitoring vehicle security system |
| CN104118409A (en) * | 2013-04-27 | 2014-10-29 | 张洪羿 | Radar monitoring safety system |
| CN204759851U (en) * | 2015-04-21 | 2015-11-11 | 中国人民解放军海军工程大学 | Quadrature receiver comprehensive experiment device |
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2015
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