CN105786022A - Unmanned aerial vehicle target tracking system - Google Patents
Unmanned aerial vehicle target tracking system Download PDFInfo
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- CN105786022A CN105786022A CN201610227909.XA CN201610227909A CN105786022A CN 105786022 A CN105786022 A CN 105786022A CN 201610227909 A CN201610227909 A CN 201610227909A CN 105786022 A CN105786022 A CN 105786022A
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- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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Abstract
The present invention provides an unmanned aerial vehicle target tracking system, belonging to the field of the target tracking technology. The unmanned aerial vehicle target tracking system comprises a first image sensor, a second image sensor being at a fixed distance of the first image sensor, a processor and a communication module. The processor is configured to determine the position data of the target on the ground according to the image information of the target on the ground obtained by the first image sensor and the second image senor and send the position data of the target on the ground to a ground station through the communication module. The communication module at least comprises a frequency source, the frequency source at least includes a voltage-controlled oscillator, and the voltage-controlled oscillator includes a first film bulk acoustic wave resonator and a second film bulk acoustic wave resonator. The unmanned aerial vehicle target tracking system provided by the invention is able to mitigate the weight and reduce the size.
Description
Technical field
The present invention relates to a kind of unmanned plane target and follow the tracks of system, belong to target following technical field.
Background technology
Unmanned plane is a kind of not manned aircraft based on wireless remotecontrol or self programme-control.Compared with manned aircraft, it has, and volume is little, cost is low, easy to use, to making the station features such as environmental requirement is low, battlefield survival is stronger.In modern war, unmanned plane can go deep into forward position, position and one or two hundred kilometers, enemy's rear area to be scouted enemy's situation and monitors, can as deceiving enemy's bait, enemy is implemented interference, enemy is attacked, it is also possible to communicate relaying, but, voltage controlled oscillator integrated level in the communication module of unmanned plane of the prior art is not high, causes that volume is bigger.
Summary of the invention
For overcoming the technical problem existed in prior art, the goal of the invention of the present invention is to provide a kind of unmanned plane target and follows the tracks of system, and the voltage controlled oscillator integrated level in its communication module is high, volume Miniaturizable.
For realizing described goal of the invention, the present invention provides kind of unmanned plane target to follow the tracks of system, it includes the first imageing sensor, it is separated by the second image sensor of fixed range with the first imageing sensor, processor and communication module, the image information of the ground target that processor obtains according to the first imageing sensor and the second imageing sensor carrys out the position data of Area Objects definitely, the position data of ground target is sent to earth station by communication module by processor, it is characterised by, communication module at least includes frequency source, described frequency source at least includes voltage controlled oscillator, described voltage controlled oscillator includes the first film bulk acoustic wave resonator and the second FBAR.
Preferably, voltage controlled oscillator also includes the first field effect transistor, the second field effect transistor, the 3rd field effect transistor, the 4th field effect transistor, the 5th field effect transistor, the 6th field effect transistor and current mirror, wherein, the source electrode of the first field effect transistor is connected to the drain electrode of the second field effect transistor, and the drain and gate of the first field effect transistor is all connected to power supply；The grid of the 3rd field effect transistor is connected to the source electrode of the first field effect transistor, and drain electrode is connected to power supply, and source electrode is connected to current mirror；The source electrode of the 4th field effect transistor is connected to the drain electrode of the 5th field effect transistor, and the drain and gate of the 4th field effect transistor is all connected to power supply；The drain electrode of the 6th field effect transistor is connected to power supply, and grid is connected to the source electrode of the 4th field effect transistor, and source electrode is connected to current mirror；The grid of the second field effect transistor and the grid of the 5th field effect transistor are connected, and are signal input part, and the source electrode of the second field effect transistor and the source electrode of the 5th field effect transistor are signal output part；The drain electrode of the second field effect transistor is connected to the first end of the first film bulk acoustic wave resonator；The drain electrode of the 5th field effect transistor is connected to the first end of the second FBAR；Second end of the first film bulk acoustic wave resonator and the second end of the second FBAR are connected, and are voltage controling end.
Preferably, communication module also includes local frequency and produces communication module, and local frequency generation module produces the signal of multiple different frequencies according to the fixed frequency signal that frequency source provides.
Preferably, communication module also includes band filter.
Preferably, communication module also includes agc circuit.
Compared with prior art, unmanned plane target provided by the invention follows the tracks of system, and the voltage controlled oscillator integrated level in its communication module is high, volume Miniaturizable.
Accompanying drawing explanation
Fig. 1 is the composition frame chart of unmanned plane borne control system；
Fig. 2 is the composition frame chart of ground support system；
Fig. 3 is the composition frame chart of the communication module of the unmanned plane borne control system that first embodiment of the invention provides；
Fig. 4 is the composition frame chart of the communication module of the unmanned plane borne control system that second embodiment of the invention provides；
Fig. 5 is the composition frame chart of the frequency source of the communication module of unmanned plane borne control system provided by the invention；
Fig. 6 is the circuit diagram of the voltage controlled oscillator (VCO) of the communication module of unmanned plane borne control system provided by the invention；
Fig. 7 is the circuit diagram of the band filter of the communication module of unmanned plane borne control system provided by the invention；
Fig. 8 is the circuit diagram of the AGC of the communication module of unmanned plane borne control system provided by the invention.
Detailed description of the invention
Unmanned plane target provided by the invention is followed the tracks of system and is included unmanned plane borne control system and ground support system, unmanned plane borne control system is used for obtaining ground image, flight parameter and described ground image, flight parameter etc. being sent to ground support system, also receive the instruction of ground support system, and fly according to instruction.The information that ground support system comes for the transmission accepting unmanned plane borne control system, processes the information received, and sends control instruction according to result to without aircraft mounted control system.The present invention is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the composition frame chart of unmanned plane borne control system, as shown in Figure 1, unmanned plane borne control system includes: data processor 201, MEMS206, communication module 212 and antenna 213, and wherein, MEMS206 is for obtaining the course information of unmanned plane and being supplied to data processor；The course information of unmanned plane is packed framing be supplied to communication module by described data processor 201, and the Frame that processor provides is encoded and modulates then passing through antenna 213 on radio frequency and being converted to electromagnetic wave and be sent to earth station by described communication module.
Unmanned plane borne control system also includes imageing sensor (such as camera) 203, video encoder 202, imageing sensor (such as camera) 205 and video encoder 204, wherein, camera 203 and video camera 205 are separated by fixed range, and are fixed on unmanned aerial vehicle platform respectively through universal joint.Time fixing, make the o of the body axis system of the photography axle unmanned plane of video camerabzbOverlap, make the o of the image plane of video camerapxpThe o of the body axis system of axle and unmanned planebxbParallel, the o of the image plane of video camerapypThe o of the body axis system of axle and unmanned planebybParallel, such that it is able to extrapolate the attitude angle of photography axle by measuring the attitude angle of unmanned plane.Video camera 203 is for shooting the image of ground target continuously, and image information is supplied to video encoder 202, and described video encoder 202, for the image information that video camera 203 provides being encoded, is then supplied to message handler 201.Video camera 205 is for shooting the image on ground continuously, and image information is supplied to video encoder 204, and described video encoder 204 is used for being encoded the image information that video camera 2055 provides, the message handler 201 then provided.The image information of the ground target that data processor obtains according to video camera 203 and video camera 205 carrys out the position data of Area Objects definitely.It is arranged on the position of line direction before unmanned plane according to video camera 203 and video camera 205, sets image that they obtain respectively as left image and right image.The image information of acquisition is also packed and is sent to earth station by communication module 121 in Frame by data processor 203.
Unmanned plane borne control system also includes navigation time dissemination system 207, and navigation time dissemination system 207 is for obtaining the positional information of unmanned plane, and positional information and temporal information are supplied to data processor 201；On each two field picture that the position data of the unmanned plane in each moment and time data investigation to video camera 203 and video camera 205 are obtained by data processor 201, it is simple to utilize left image in the same time and right image to position on a surface target.Also by superposition, the image information of positional information and temporal information, the positional information of unmanned plane and time information package enter in Frame and are sent to earth station by communication module 212 data processor 203.Each data information frame includes: information header, start stop position, data bit and check bit etc..
Unmanned plane borne control system also includes memorizer 208, and memorizer 208 is used for the program that stores and data, and described program is the program carrying out ground target location according to left image, right image, the position of unmanned plane and course.
Unmanned aerial vehicle control system also includes flight controller 209, unmanned plane servo structure and memorizer 210.Communication module 212 obtains, also by antenna 213, the high-frequency information that the transmission on ground comes, and demodulate from high-frequency information, decode Frame, then send data processor 201 to, data processor 201 parses the information such as flight directive from Frame, send flight controller 209 to, flight directive is stored in memorizer 210 by flight controller 9, and controls unmanned plane servo structure 211 according to flight directive simultaneously, thus controlling the flight of unmanned plane.
nullFig. 2 is the composition frame chart of ground support system，As shown in Figure 2，Ground support system provided by the invention includes processor 220、Input/output interface 221、Network adapter 222、Communication module 223、Dual-mode antenna 224 and memorizer 225，Wherein，Dual-mode antenna 224 is for being converted to the signal of telecommunication by spatial electromagnetic ripple signal，And it is supplied to communication module 223，Unmanned plane borne control system is sent the signal come and is demodulated by communication module 223、Decoding is then supplied to processor 220，The signal that the transmission of unmanned plane borne control system comes is processed and passes through input/output interface 221 and displays over the display by processor 220，Print also by printer，Also can store memorizer 225，Other user or server it is sent to also by network adapter 222.Input/output interface 221 also can connect keyboard and mouse, and keyboard is used for inputting instruction or performing some operation, and mouse is used for performing some operation.
Term " data processor " in the present invention, " processor " can refer to multiple independent processor.Term " memorizer " is intended to include the memorizer with relational processor, such as RAM (random access memory), ROM (read only memory), because determining storage device (such as, hard disk), movable memory equipment (such as, floppy disk), flash memory etc..As the part that data process, processor, memorizer and input/output interface (such as display and keyboard) such as can pass through bus interconnection.Can also such as pass through network adapter (such as network interface card) and Media Interface Connector (such as floppy disk or CD-ROM drive) is interconnected.Network adapter 222 can also be cable modem, cable modem and Ethernet card etc..
Fig. 3 is the composition frame chart of the communication module of the unmanned plane borne control system that first embodiment of the invention provides, as shown in Figure 3, communication module provided by the invention includes transmitter unit, local frequency generation units 11, frequency source 10 and antenna 1, and wherein, frequency source 10 is used for producing fixed frequency signal；The signal that local frequency generation units 11 produces according to frequency source 1 generates multiple frequency signals, including being supplied to the altofrequency carrier signal of manipulator, being supplied to the high-frequency signal of frequency mixer and be supplied to the intermediate-freuqncy signal of cymoscope；Transmitter unit, is encoded the data message that data processor 1 to send and modulates on high frequency carrier, is then converted to electromagnetic wave by antenna and is sent in the air.Transmitter unit includes encoder 16, manipulator 15, power amplifier 14 and band filter (BPF) 13, and wherein, encoder 16 is for carrying out source and channel coding by data message to be sent for data processor, to form baseband signal to be sent；Manipulator 15 is for forming modulation signal on modulates baseband signals to be sent to high frequency carrier, and it is supplied to power amplifier 14, power amplifier 14 to modulation signal carry out power amplification and be filtered through band filter 13, and after through switch 16 and antenna 1 send.
Communication module also includes receiver unit, receiver unit includes band filter (BPF) 2, small signal amplifier (AMP) 3, band filter (BPF) 4, multiplying mixer 5, intermediate-frequency filter (MPF) 6, intermediate frequency amplifier (AMP) 7, multiplication cymoscope 8, low pass filter (LPF) 9 and decoder 17, wherein, band filter 2 is filtered for the signal of telecommunication that reception antenna 1 is received；Small signal amplifier 3 is amplified for the signal that band filter 2 is provided, and is supplied to band filter 4 with further filtering；The high-frequency signal that frequency mixer 5 produces for the signal that band filter 4 is provided and this frequency generation units 11 is mixed, and takes out intermediate-freuqncy signal through intermediate-frequency filter 6；Intermediate frequency amplifier 7 carries out intermediate frequency amplification for the signal that intermediate-frequency filter 6 is provided, and is supplied to multiplication cymoscope 8；Multiplication cymoscope 8 makes the signal that the intermediate-freuqncy signal that local frequency generation units 11 produces provides with intermediate frequency amplifier 7 be multiplied, and low-pass filtered device 9 takes out baseband signal, baseband signal is taken out, through decoder 17 decoding, the data message sent of making a start and is then supplied to data processor.
Local frequency generation units 11 is for producing to be supplied to the high-frequency signal of multiplying mixer 5, it at least includes frequency divider 115 that frequency dividing ratio is P, phase shifter 120, frequency dividing ratio are the frequency divider 124 of W, phase shifter 122, multiplier 113, multiplier 114, adder 125 and have the doubler 111 that frequency is H, wherein, frequency divider 115 is for the v to the signal that frequency source 10 produces0=V0cos2πf0T carries out P frequency dividing and obtains signal:
Phase shifter 120 is rightPhase shift, phase shiftObtain
The frequency divider 124 signal v for frequency source 10 is produced0=V0cos2πf0T carries out W frequency dividing and obtains signal:
Phase shifter 122 is rightPhase shift, phase shiftObtain
Multiplier 113 makesWithIt is multiplied；Multiplier 114 makesWithIt is multiplied, and is added through adder 125, obtain:
Then this signal is supplied to doubler 111, obtains through the frequency multiplication of H multiple:
This signal is the high-frequency signal being supplied to supply multiplying mixer 5.
Local frequency generation units 11 is additionally operable to the high-frequency carrier signal producing to be supplied to manipulator 15, it at least includes frequency divider 118, phase shifter 121, phase shifter 123, multiplier 116, multiplier 117, adder 126 that frequency dividing ratio is S and has the doubler 119 that frequency is E, wherein, frequency divider 118 is in the signal v that frequency source 10 is produced0=V0cos2πf0T carries out S frequency dividing and obtains signal:
Phase shifter 121 is rightPhase shift, phase shiftObtain:
Phase shifter 123 is to v0=V0cos2πf0T phase shift, phase shiftObtain: v8=V0sin2πf0t；
Multiplier 116 makes v0=V0cos2πf0T andIt is multiplied；Multiplier 117 makes v8=V0sin2πf0T andIt is multiplied, and is added through adder 126, obtain:
Then this signal is supplied to doubler 119, obtains through the frequency multiplication of E multiple:
This signal is the high-frequency carrier signal being supplied to manipulator 15 as transmitting terminal.
Local frequency generation units 11 is additionally operable to the intermediate-freuqncy signal producing to be supplied to multiplication cymoscope 8, and it at least includes the frequency divider 112 that frequency dividing ratio is R, and frequency divider 112 is in the signal v that frequency source 10 is produced0=V0cos2πf0T carries out R frequency dividing and is provided to the intermediate-freuqncy signal of multiplication cymoscope 8, namely
The numerical value availability data processor of frequency dividing ratio R in first embodiment of the invention, P, W, S and frequency H, E controls according to program setting.
Fig. 4 is the composition frame chart of the communication module of the unmanned plane borne control system that second embodiment of the invention provides, as shown in Figure 4, the communication module that the communication module that second embodiment of the invention provides provides with first embodiment, different only: frequency divider 124 doubler 134 replaces, frequency divider doubler 136 replaces, frequency divider 115 doubler 135 replaces, and is described below in detail.
Local frequency generation units 11 is for producing to be supplied to the high-frequency signal of multiplying mixer 5, it at least includes doubler 135 that frequency is P, phase shifter 120, frequency multiplication are the doubler 134 of W, phase shifter 122, multiplier 113, multiplier 114, adder 125 and have the doubler 111 that frequency is H, and doubler 135 is for the v to the signal that frequency source 10 produces0=V0cos2πf0T carries out P frequency multiplication and obtains signal:
v1=V1cos2πPf0t
Phase shifter 120 is to v1=V1cos2πPf0T phase shift, phase shiftObtain v2=V1sin2πPf0t。
The doubler 134 signal v for frequency source 10 is produced0=V0cos2πf0T carries out W frequency multiplication and obtains signal:
v3=V3cos2πWf0t；
Phase shifter 122 is to v3=V3cos2πWf0T phase shift, phase shiftObtain v4=V3sin2πWf0T:
Multiplier 113 makes v3=V3cos2πWf0T and v2=V1sin2πPf0T is multiplied；Multiplier 114 makes v4=V3sin2πWf0T and v1=V1cos2πPf0T is multiplied, and is added through adder 125, obtains:
V3sin2πWf0t·V1cos2πPf0t±V3cos2πWf0t·V1sin2πPf0t
=V3V1sin2π(Wf0±Pf0)t
Then this signal is supplied to doubler 111, obtains through the frequency multiplication of H multiple:
v5=V5sin2π[H(W±P)·f0] t, this signal is the high-frequency signal being supplied to supply multiplying mixer 5.
Local frequency generation units 11 is additionally operable to the high-frequency carrier signal producing to be supplied to manipulator 15, it at least includes doubler 136, phase shifter 121, phase shifter 123, multiplier 116, multiplier 117, adder 126 that frequency is S and has the doubler 119 that frequency is E, wherein, doubler 136 is in the signal v that frequency source 10 is produced0=V0cos2πf0T carries out S frequency multiplication and obtains signal: v6=V6Cos2 π Sft,
Phase shifter 121 is to v6=V6cos2πSf0T phase shift, phase shiftObtain: v7=V6sin2πSf0T,
Phase shifter 123 is to V0=V0cos2πf0T phase shift, phase shiftObtain: v8=V0sin2πf0t；Multiplier 116 makes v0=V0cos2πf0T and v7=V6sin2πSf0T is multiplied；Multiplier 117 makes v8=V0sin2πf0T and v6=V6cos2πSf0T, is multiplied, and is added through adder 126:
Then it is supplied to doubler 119, obtains through the frequency multiplication of E multiple:
v9=V9sin2π(E(S±1)·f0) t,
This signal is the high-frequency carrier signal being supplied to manipulator 15 as transmitting terminal.
Local frequency generation units 11 is additionally operable to the intermediate-freuqncy signal producing to be supplied to multiplication cymoscope 8, and it at least includes the frequency divider 112 that frequency dividing ratio is R, and frequency divider 112 is in the signal v that frequency source 10 is produced0=V0cos2πf0T carries out R frequency dividing and is provided to the intermediate-freuqncy signal of multiplication cymoscope 8, namely
Frequency dividing ratio R and the numerical value availability data processor of frequency H, E, P, W, S in second embodiment of the invention set according to user and control.
Although the present invention illustrates the communication module of both the above form, as long as but be not limited to both forms. obtain the technical scheme of multiple frequency source all in scope disclosed by the invention by a frequency source scheme divided, frequency multiplication.
Fig. 5 is the composition frame chart of the frequency source of the communication module of unmanned plane borne control system provided by the invention, as shown in Figure 5, frequency source provided by the invention includes: crystal oscillator 101, respectively than for the frequency divider 102 of K, phase discriminator 103, low pass filter 104, voltage controlled oscillator VCO and the ratio frequency divider 106 for N respectively, wherein, crystal oscillator 101 is used for producing fixed frequency signal and being supplied to frequency divider 102, and crystal oscillator 101 is divided and be supplied to phase discriminator 103 by frequency divider 102；The voltage that VCO provides according to reference Vf and low pass filter produces VCO signal, and divided device 106 divides the phase discriminator 103 then provided, phase discriminator 103 compares the phase place of the signal that frequency divider 103 and frequency divider 106 provide and low-pass filtered device LPF filters high frequency thus producing voltage signal, and this voltage signal superposes to control further the frequency signal of VCO generation with Vf.The numerical value availability data processor of frequency dividing ratio K and N sets according to user and controls.
Fig. 6 is the circuit diagram of the voltage controlled oscillator (VCO) of the communication module of unmanned plane borne control system provided by the invention, as shown in Figure 6, voltage controlled oscillator provided by the invention (VCO) voltage controlled oscillator includes film body acoustic wave oscillator BAWF1, film body acoustic wave oscillator BAWF2, field effect transistor T3, field effect transistor T4, field effect transistor T7, field effect transistor T5, field effect transistor T6, field effect transistor T8 and constant-current source, wherein, the source electrode of field effect transistor T3 is connected to the drain electrode of field effect transistor T4, and the drain and gate of field effect transistor T3 is all connected to power supply EC；The grid of field effect transistor T7 is connected to the source electrode of field effect transistor T3, and drain electrode is connected to power supply EC, and source electrode is connected to current mirror；The source electrode of field effect transistor T5 is connected to the drain electrode of effect pipe T6, and the drain and gate of field effect transistor T5 is all connected to power supply EC；The drain electrode of field effect transistor T8 is connected to power supply EC, and grid is connected to the source electrode of field effect transistor T5, and source electrode is connected to current mirror；The grid of grid T4 and the field effect transistor T5 of field effect transistor is connected, and is biased electrical pressure side, and the source electrode of field effect transistor T4 and the source electrode of field effect transistor T6 are signal output part.The drain electrode of field effect transistor T4 is connected to first end of film bulk acoustic resonator BAWF1；The drain electrode of field effect transistor T6 is connected to first end of FBAR BAWF2；Second end of FBAR BAWF1 is connected with second end of FBAR BAWF2, and is voltage controling end.Control voltage Vf and be connected to control end by resistance R10.
Voltage controlled oscillator (VCO) also includes current mirror, and current mirror includes field effect transistor T9, field effect transistor T10, field effect transistor T11 and constant-current source CS, and one end of constant-current source CS is connected to power supply EC, and the other end is connected to the drain electrode of field effect transistor T11；The source ground of field effect transistor T11, grid is connected to its drain electrode, and is connected to the grid of field effect transistor T9 and the grid of field effect transistor T10；The source ground of field effect transistor T9, drain electrode is connected to the source electrode of field effect transistor T7 to provide constant current to it；The source ground of field effect transistor T10, drain electrode is connected to the source electrode of field effect transistor T8 to provide constant current to it.
Fig. 7 is the circuit diagram of the band filter of the communication module of unmanned plane borne control system provided by the invention, as shown in Figure 7, band filter provided by the invention includes inductance L, electric capacity C, varactor D1 and resistance R1, wherein, electric capacity C and varactor D1 is in series composition series arm, series arm and inductance L are in parallel, so can form by voltage-controlled band filter, first end of resistance R1 is connected on electric capacity C and the varactor D1 intermediate node being in series, and second end of resistance R1 connects control voltage.
Fig. 8 is the circuit diagram of the AGC of the communication module of unmanned plane borne control system provided by the invention.As shown in Figure 8, AGC provided by the invention controls voltage and includes proportional amplifier, it includes operational amplifier IC, resistance R5, resistance R6, resistance R7, resistance R8 and Zener diode D3, wherein, first end of resistance R7 is connected to the inverting input of operational amplifier IC, and the second end is connected to the outfan of the low pass filter 9 of cymoscope to provide AGC voltage VAGC: resistance R5 is connected between outfan and the inverting input of operational amplifier IC；Resistance R6 and resistance R8 is in series and is connected between power supply ECC and ground, and the intermediate node that resistance R6 and resistance R8 is in series is connected to the same item input of operational amplifier, to provide reference voltage to operational amplifier IC:Negative pole in Zener diode is connected to power supply, and positive pole provides voltage to the power end of operational amplifier IC.
AGC control circuit also includes PNP transistor T1, and its emitter stage is connected to the positive pole of Zener diode, and colelctor electrode is connected to the outfan of operational amplifier through resistance R4, and colelctor electrode is connected to the base stage of transistor T2 through resistance R3.AGC control circuit also includes NPN transistor T2, its grounded emitter, and colelctor electrode is connected to reference voltage Vf through resistance R9, diode D2 successively, is simultaneously coupled to second end of the resistance R1 of wave filter.
Reference voltage Vf value in the present invention is controlled according to program by data processor.
Although below having made to elaborate to design and the example according to the object of the invention in conjunction with accompanying drawing; but skilled artisan recognize that; under the premise without departing from present inventive concept, the content that any improvement made based on the present invention and conversion still fall within scope.
Claims (5)
1. a unmanned plane target follows the tracks of system, it includes the first imageing sensor, it is separated by the second image sensor of fixed range with the first imageing sensor, processor and communication module, the image information of the ground target that processor obtains according to the first imageing sensor and the second imageing sensor carrys out the position data of Area Objects definitely, the position data of ground target is sent to earth station by communication module by processor, it is characterized in that, communication module at least includes frequency source, described frequency source at least includes voltage controlled oscillator, described voltage controlled oscillator includes the first film bulk acoustic wave resonator and the second FBAR.
2. unmanned plane target according to claim 1 follows the tracks of system, it is characterized in that, voltage controlled oscillator also includes the first field effect transistor, the second field effect transistor, the 3rd field effect transistor, the 4th field effect transistor, the 5th field effect transistor, the 6th field effect transistor and current mirror, wherein, the source electrode of the first field effect transistor is connected to the drain electrode of the second field effect transistor, and the drain and gate of the first field effect transistor is all connected to power supply；The grid of the 3rd field effect transistor is connected to the source electrode of the first field effect transistor, and drain electrode is connected to power supply, and source electrode is connected to current mirror；The source electrode of the 4th field effect transistor is connected to the drain electrode of the 5th field effect transistor, and the drain and gate of the 4th field effect transistor is all connected to power supply；The drain electrode of the 6th field effect transistor is connected to power supply, and grid is connected to the source electrode of the 4th field effect transistor, and source electrode is connected to current mirror；The grid of the second field effect transistor and the grid of the 5th field effect transistor are connected, and are signal input part, and the source electrode of the second field effect transistor and the source electrode of the 5th field effect transistor are signal output part；The drain electrode of the second field effect transistor is connected to the first end of the first film bulk acoustic wave resonator；The drain electrode of the 5th field effect transistor is connected to the first end of the second FBAR；Second end of the first film bulk acoustic wave resonator and the second end of the second FBAR are connected, and are voltage controling end.
3. unmanned plane target according to claim 2 follows the tracks of system, it is characterised in that communication module also includes local frequency and produces communication module, and local frequency generation module produces the signal of multiple different frequencies according to the fixed frequency signal that frequency source provides.
4. unmanned plane target according to claim 3 follows the tracks of system, it is characterised in that communication module also includes band filter.
5. unmanned plane target according to claim 4 follows the tracks of system, it is characterised in that communication module also includes agc circuit.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871409A (en) * | 2016-04-29 | 2016-08-17 | 黄胜波 | Signal receiving and transmitting machine |
| CN107634781A (en) * | 2017-10-15 | 2018-01-26 | 天津飞眼无人机科技有限公司 | Unmanned plane countercharge system |
| CN107688181A (en) * | 2017-10-23 | 2018-02-13 | 天津飞眼无人机科技有限公司 | The monitoring system of empty land two-purpose traffic tool |
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2016
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871409A (en) * | 2016-04-29 | 2016-08-17 | 黄胜波 | Signal receiving and transmitting machine |
| CN107634781A (en) * | 2017-10-15 | 2018-01-26 | 天津飞眼无人机科技有限公司 | Unmanned plane countercharge system |
| CN107688181A (en) * | 2017-10-23 | 2018-02-13 | 天津飞眼无人机科技有限公司 | The monitoring system of empty land two-purpose traffic tool |
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