CN207977954U - A kind of unsteady attitude small satellite communication device for recalling array based on direction - Google Patents
A kind of unsteady attitude small satellite communication device for recalling array based on direction Download PDFInfo
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- CN207977954U CN207977954U CN201820160361.6U CN201820160361U CN207977954U CN 207977954 U CN207977954 U CN 207977954U CN 201820160361 U CN201820160361 U CN 201820160361U CN 207977954 U CN207977954 U CN 207977954U
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Abstract
The utility model discloses a kind of unsteady attitude small satellite communication devices for recalling array based on direction, including regular hexahedron moonlet, further include the antenna part being located on moonlet outer surface, the RF front-end circuit part that is arranged inside moonlet and software radio part, antenna part is connect by coaxial line with RF front-end circuit part, and RF front-end circuit part is also connect with software radio part.The device eliminates control moment device, attitude measurement and control device part, small, light weight, solve the problems, such as existing satellite need carry form regulation system and traditional satellite system has a single function, technical system is fixed, solution of emergent event energy force difference, be difficult to adapt to variation electromagnetic environment.
Description
Technical field
The utility model is related to wireless communication technology fields, and in particular to a kind of posture for recalling array antenna based on direction
Unstable small satellite communication device.
Background technology
The communication device carried on existing satellite has control moment device and attitude measurement and device for adjusting posture,
These devices all occupy a big chunk volume and quality, therefore, are being intended to miniaturization, light-weighted moonlet group-net communication
Under form project complexity and R＆D cycle are increased to satellite communication.In addition, traditional space information system is substantially pressed
Distinguished according to function, exist have a single function, technical system is fixed, solution of emergent event energy force difference, be difficult to adapt to variation electromagnetism
The drawbacks of environment.
To a certain extent, providing one kind can overcome communication equipment to be run in track to the design philosophy of the utility model
In posture uncertainty and unstability disadvantage, save satellite control moment device, attitude measurement and control device part, make
It more tends to minimize, lightweight；Further, present apparatus application software radiotechnics increases the flexible of system design
Property, provide a kind of new thinking for the design of small satellite communication scheme.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a kind of appearance for recalling array based on direction
The unstable small satellite communication device of state, the device eliminate control moment device, attitude measurement and control device part, volume
Small, light weight, solve existing satellite need to carry form regulation system and traditional satellite system have a single function, technical system
Fixation, is difficult to adapt to the problem of electromagnetic environment of variation at solution of emergent event energy force difference.
Realizing the technical solution of the utility model aim is：
A kind of unsteady attitude small satellite communication device for recalling array based on direction, including regular hexahedron moonlet, also
Including the antenna part being located on moonlet outer surface, the RF front-end circuit part being arranged inside moonlet and software wireless
Electric part, antenna part are connect by coaxial line with RF front-end circuit part, RF front-end circuit part also with software wireless
Electric part connects.
The antenna part, including 24 pairs of antennas, are located at the surface of regular hexahedron moonlet, and 4 pairs of days are arranged in each face
Line, 4 pairs of antennas in each face form one group of direction and recall aerial array.
The RF front-end circuit part, including 4 RF front-end circuits are the first RF front-end circuit, respectively
Two RF front-end circuits, third RF front-end circuit and the 4th RF front-end circuit；Each RF front-end circuit includes hilted broadsword list
Throw switch, duplexer, three-in-one combiner, two-in-one combiner, 6 throw switch of hilted broadsword, low-noise amplifier, low-pass filter,
Power amplifier；The signal input part of low-noise amplifier is connect with the signal output end of two-in-one combiner, signal output end
It is connect with the signal receiving end of software radio part；The signal input part of two-in-one combiner respectively with 2 three-in-one combinings
The signal output end of device connects；The signal input part of each three-in-one combiner is connect with 3 duplexers respectively；Each duplexer
It is connect with single-pole single-throw switch (SPST)；Single-pole single-throw switch (SPST) also connect with antenna and is communicated；The controlling switch of single-pole single-throw switch (SPST) is also
It is connect with signal processor；The signal input part of low-pass filter is connect with the transmitting terminal of software radio part, low-pass filtering
The signal output end of device and the signal input part of power amplifier connect；The signal output end of power amplifier is thrown out with hilted broadsword 6
The signal input part of pass connects；6 throw switch signal output end of hilted broadsword is connect with 6 duplexers respectively, the control of 6 throw switch of hilted broadsword
Pin is also connect with signal processor.
The RF front-end circuit, 24 single-pole single-throw switch (SPST)s connect with 1 pair of antenna on each face of regular hexahedron respectively
It connects.
The software radio part includes the first RF transceiver, the second RF transceiver and signal processor；Letter
Number processor is connect with the first RF transceiver, the second RF transceiver respectively, and the first RF transceiver is also penetrated with first respectively
The signal input part of the low-pass filter of frequency front-end circuit and the signal output end of low-noise amplifier, the second RF front-end circuit
The signal input part of low-pass filter connected with the signal output end of low-noise amplifier；Second RF transceiver is respectively with
The signal input part of the low-pass filter of three RF front-end circuits and the signal output end of low-noise amplifier, the 4th radio-frequency front-end
The signal input part of the low-pass filter of circuit is connected with the signal output end of low-noise amplifier.
First RF transceiver and the second RF transceiver, is the transceiver of radio frequency receiving and transmitting front end integrated circuit,
Including sequentially connected reception frequency mixer, receive second filter and analog-digital converter；It further include sequentially connected transmitting mixing
Device, emission filter and digital analog converter；Receive the low-noise amplifier of mixer signal input terminal and RF front-end circuit
Signal output end connects；The signal output end of analog-digital converter and the data input output ports of signal processor connect；Digital-to-analogue
The signal input part of converter and the data input output ports of signal processor connect；The signal output end of second frequency mixing module
It is connect with the signal input part of the low-pass filter of RF front-end circuit.
The signal processor is the signal processor based on FPGA.
The RF front-end circuit, including receive capabilities and emission function：
When executing receive capabilities, 6 throw switch of hilted broadsword and single-pole single-throw switch (SPST) of all transmitting links, signal processor are disconnected
4 single-pole single-throw switch (SPST)s in each face are gated successively, and 4 pairs of antennas in the face being strobed are in receiving state signal, when antenna connects
After receiving ground signal, signal enters the receiving terminal of duplexer by single-pole single-throw switch (SPST), using three-in-one combiner and two
Unification combiner enters low-noise amplifier, subsequently into RF transceiver；RF transceiver carries out down coversion to radiofrequency signal
And filter and obtain intermediate-freuqncy signal, then analog intermediate frequency signal is converted to digital signal and is transferred to signal processor, signal processor
By way of scanning, the received signal strength in each face of moonlet is measured and compared respectively, judges that signal is strongest
Receiving plane；
When executing emission function, by signal transmission after processing to RF transceiver, received by radio frequency by signal processor
It sends out device and carries out D/A conversions and up-conversion, using power amplifier is entered after low-pass filter, gated by signal processor
Six throw switch of radio frequency hilted broadsword enters the transmission channel of duplexer, then using single-pole single-throw switch (SPST) after, launched by antenna
It goes.
A kind of communication means of unsteady attitude small satellite communication device that being recalled array based on direction, is specifically included as follows
Step：
1) device is powered, and is initialized, and 6 throw switch of hilted broadsword and single-pole single-throw switch (SPST) of all transmitting links, letter are disconnected
Number processor gates 4 single-pole single-throw switch (SPST)s in each face successively, and 4 pairs of antennas in the face being strobed are in receiving state signal；
2) after antenna receives ground signal, signal passes sequentially through single-pole single-throw switch (SPST), duplexer, three-in-one combining
Device, two-in-one combiner and low-noise amplifier enter RF transceiver, and RF transceiver carries out down coversion simultaneously to radiofrequency signal
It is filtered to obtain intermediate-freuqncy signal, then analog intermediate frequency signal is converted to digital signal and is transferred to signal processor, signal processing
Device carries out carrier extract and demodulation to signal, by way of scanning, respectively to the received signal strength in each face of moonlet into
Row measures and compares, and judges the strongest receiving plane of signal；
3) after judging the most strong face of signal, signal processor controls 6 throw switch of hilted broadsword and single-pole single-throw switch (SPST) gating signal
Most strong face is as the surface of emission, then the signal of the intermediate frequency of modulation is transmitted to RF transceiver and carries out digital-to-analogue conversion and up-conversion, then leads to
Six throw switch of hilted broadsword of wave filter, power amplifier and gating, passes through array antenna into duplexer and single-pole single-throw switch (SPST)
Launch.
In step 3), array is recalled in the direction of the array antenna, four array elements being made of 4 pairs of antennas in each face
Antenna, the radiofrequency signal that antenna receives are cos (wRFt+φg(t)), into RF transceiver, the reception of RF transceiver
Local oscillator is cos (wRF-IFT) it is mixed with radiofrequency signal, cos (w is obtained after down coversionIFt+φg(t))+cos(w2RF-IFt
+φg(t)) cos (w then, are filtered out by the filter inside RF transceiver2RF-IFt+φg(t)) signal leaves intermediate-freuqncy signal
For cos (wIFt+φg(t))；Intermediate-freuqncy signal enters signal processor after analog-to-digital conversion and carries out carrier extract and demodulation, carries out
It is modulated again after processing, into digital-to-analogue conversion and filtering is carried out in RF transceiver, signal is still intermediate-freuqncy signal, radio frequency at this time
The transmitting local oscillator of transceiver is cos (wRF+IFT), it is mixed with treated intermediate-freuqncy signal, by being obtained after up-conversion
cos(wRFt-φg(t))+cos(wRF+2IFt+φg(t)) filter chip then, is entered by the transmitting terminal of RF transceiver,
Filter out cos (wRF+2IFt+φg(t)) signal, obtained cos (wRFt-φg(t)) signal is the conjugation of the former radiofrequency signal received
Signal, then this signal is realized into direction backtracking by launching after power amplification.
The beneficial effects of the utility model are：
1, compared with prior art, 4 pairs of days are installed in each face of regular hexahedron small satellite communication device by the utility model
Line forms 6 group pattern antennas, is scanned by 4 pairs of antenna received signals to each face, each by measuring and comparing
The signal strength in a face, finds out the most strong face of signal, controls single-pole single-throw switch (SPST) and the most strong face of six throw switch opening signal of hilted broadsword
Communication link switchs, then the direction for realizing phase conjugation backtracking signal is launched by power amplification；
2, compared with prior art, the utility model is based on RF transceiver and FPGA structure software radio transmitting-receivings system
System, overcomes original system and has a single function, technical system is fixed, solution of emergent event energy force difference, it is difficult to adapt to the electromagnetism of variation
The problem of environment.
Description of the drawings
Fig. 1 is the system structure diagram of unsteady attitude moonlet；
Fig. 2 is the structure diagram (1) of RF front-end circuit part；
Fig. 3 is the structure diagram (2) of RF front-end circuit part；
Fig. 4 RF transceivers recall the structure diagram of aerial array into line direction.
Specific implementation mode
The utility model is further elaborated with reference to the accompanying drawings and examples, but is not the limit to the utility model
It is fixed.
Embodiment：
As shown in Figure 1, a kind of unsteady attitude small satellite communication device for recalling array based on direction, including regular hexahedron
The RF front-end circuit part that moonlet further includes the antenna part being located on moonlet outer surface, is arranged inside moonlet
With software radio part, antenna part is connect by coaxial line with RF front-end circuit part, and RF front-end circuit part is also
It is connect with software radio part.
The antenna part, including 24 pairs of antennas, are located at the surface of regular hexahedron moonlet, and 4 pairs of days are arranged in each face
Line, 4 pairs of antennas in each face form one group of direction and recall aerial array.
As shown in Figure 2 and Figure 3, the RF front-end circuit part, including 4 RF front-end circuits are first to penetrate respectively
Frequency front-end circuit, the second RF front-end circuit, third RF front-end circuit and the 4th RF front-end circuit；Each radio-frequency front-end electricity
Road include single-pole single-throw switch (SPST), duplexer, three-in-one combiner, two-in-one combiner, 6 throw switch of hilted broadsword, low-noise amplifier,
Low-pass filter, power amplifier；The signal input part of low-noise amplifier is connect with the signal output end of two-in-one combiner,
Signal output end is connect with the signal receiving end of software radio part；The signal input part of two-in-one combiner respectively with 2
The signal output end of three-in-one combiner connects；The signal input part of each three-in-one combiner is connect with 3 duplexers respectively；
Each duplexer is connect with single-pole single-throw switch (SPST)；Single-pole single-throw switch (SPST) also connect with antenna and is communicated；Single-pole single-throw switch (SPST)
Controlling switch is also connect with signal processor；The signal input part of low-pass filter connects with the transmitting terminal of software radio part
It connects, the signal output end of low-pass filter and the signal input part of power amplifier connect；The signal output end of power amplifier
It is connect with the signal input part of 6 throw switch of hilted broadsword；6 throw switch signal output end of hilted broadsword is connect with 6 duplexers respectively, hilted broadsword 6
The controlling switch of throw switch is also connect with signal processor.
The RF front-end circuit, 24 single-pole single-throw switch (SPST)s connect with 1 pair of antenna on each face of regular hexahedron respectively
It connects.
The software radio part includes the first RF transceiver, the second RF transceiver and signal processor；Letter
Number processor is connect with the first RF transceiver, the second RF transceiver respectively, and the first RF transceiver is also penetrated with first respectively
The signal input part of the low-pass filter of frequency front-end circuit and the signal output end of low-noise amplifier, the second RF front-end circuit
The signal input part of low-pass filter connected with the signal output end of low-noise amplifier；Second RF transceiver is respectively with
The signal input part of the low-pass filter of three RF front-end circuits and the signal output end of low-noise amplifier, the 4th radio-frequency front-end
The signal input part of the low-pass filter of circuit is connected with the signal output end of low-noise amplifier.
As shown in figure 4, first RF transceiver and the second RF transceiver, are radio frequency receiving and transmitting front end integrated circuits
Transceiver, including sequentially connected reception frequency mixer, receive second filter and analog-digital converter；Further include sequentially connected
Transmitting mixer, emission filter and digital analog converter；Receive the low noise of mixer signal input terminal and RF front-end circuit
The signal output end of amplifier connects；The signal output end of analog-digital converter and the data input output ports of signal processor connect
It connects；The signal input part of digital analog converter and the data input output ports of signal processor connect；The letter of second frequency mixing module
The signal input part of the low-pass filter of number output end and RF front-end circuit connects.
The signal processor is the signal processor based on FPGA.
The RF front-end circuit, including receive capabilities and emission function：
When executing receive capabilities, 6 throw switch of hilted broadsword and single-pole single-throw switch (SPST) of all transmitting links, signal processor are disconnected
4 single-pole single-throw switch (SPST)s in each face are gated successively, and 4 pairs of antennas in the face being strobed are in receiving state signal, when antenna connects
After receiving ground signal, signal enters the receiving terminal of duplexer by single-pole single-throw switch (SPST), using three-in-one combiner and two
Unification combiner enters low-noise amplifier, subsequently into RF transceiver；RF transceiver carries out down coversion to radiofrequency signal
And filter and obtain intermediate-freuqncy signal, then analog intermediate frequency signal is converted to digital signal and is transferred to signal processor, signal processor
By way of scanning, the received signal strength in each face of moonlet is measured and compared respectively, judges that signal is strongest
Receiving plane；
When executing emission function, by signal transmission after processing to RF transceiver, received by radio frequency by signal processor
It sends out device and carries out D/A conversions and up-conversion, using power amplifier is entered after low-pass filter, gated by signal processor
Six throw switch of radio frequency hilted broadsword enters the transmission channel of duplexer, then using single-pole single-throw switch (SPST) after, launched by antenna
It goes.
The software radio part additionally uses existing software and radio technique and is realized.
A kind of communication means of unsteady attitude small satellite communication device that being recalled array based on direction, is specifically included as follows
Step：
1) device is powered, and is initialized, and 6 throw switch of hilted broadsword and single-pole single-throw switch (SPST) of all transmitting links, letter are disconnected
Number processor gates 4 single-pole single-throw switch (SPST)s in each face successively, and 4 pairs of antennas in the face being strobed are in receiving state signal；
2) after antenna receives ground signal, signal passes sequentially through single-pole single-throw switch (SPST), duplexer, three-in-one combining
Device, two-in-one combiner and low-noise amplifier enter RF transceiver, and RF transceiver carries out down coversion simultaneously to radiofrequency signal
It is filtered to obtain intermediate-freuqncy signal, then analog intermediate frequency signal is converted to digital signal and is transferred to signal processor, signal processing
Device carries out carrier extract and demodulation to signal, by way of scanning, respectively to the received signal strength in each face of moonlet into
Row measures and compares, and judges the strongest receiving plane of signal；
3) after judging the most strong face of signal, signal processor controls 6 throw switch of hilted broadsword and single-pole single-throw switch (SPST) gating signal
Most strong face is as the surface of emission, then the signal of the intermediate frequency of modulation is transmitted to RF transceiver and carries out digital-to-analogue conversion and up-conversion, then leads to
Six throw switch of hilted broadsword of wave filter, power amplifier and gating, passes through array antenna into duplexer and single-pole single-throw switch (SPST)
Launch.
In step 3), array is recalled in the direction of the array antenna, four array elements being made of 4 pairs of antennas in each face
Antenna.The radiofrequency signal that antenna as shown in Figure 4 receives is cos (wRFt+φg(t)), into RF transceiver, radio-frequency receiving-transmitting
The reception local oscillator of device is cos (wRF-IFT) it is mixed with radiofrequency signal, cos (w is obtained after down coversionIFt+φg(t))+
cos(w2RF-IFt+φg(t)) cos (w then, are filtered out by the filter inside RF transceiver2RF-IFt+φg(t)) signal stays
Lower intermediate-freuqncy signal is cos (wIFt+φg(t))；Intermediate-freuqncy signal enters signal processor after analog-to-digital conversion and carries out carrier extract
And demodulation, it is modulated again after being handled, into progress digital-to-analogue conversion and filtering in RF transceiver, during signal is still at this time
The transmitting local oscillator of frequency signal, RF transceiver is cos (wRF+IFT), it is mixed with treated intermediate-freuqncy signal, by upper change
Cos (w are obtained after frequencyRFt-φg(t))+cos(wRF+2IFt+φg(t)) filter then, is entered by the transmitting terminal of RF transceiver
Wave device chip, filters out cos (wRF+2IFt+φg(t)) signal, obtained cos (wRFt-φg(t)) signal is the former radio frequency letter received
Number conjugated signal, then by this signal by launching after power amplification, realize direction backtracking.
Claims (7)
1. a kind of unsteady attitude small satellite communication device for recalling array based on direction, which is characterized in that including regular hexahedron
The RF front-end circuit part that moonlet further includes the antenna part being located on moonlet outer surface, is arranged inside moonlet
With software radio part, antenna part is connect by coaxial line with RF front-end circuit part, and RF front-end circuit part is also
It is connect with software radio part.
2. a kind of unsteady attitude small satellite communication device for recalling array based on direction according to claim 1, special
Sign is, the antenna part, including 24 pairs of antennas, is located at the surface of regular hexahedron moonlet, and 4 pairs of days are arranged in each face
Line, 4 pairs of antennas in each face form one group of direction and recall aerial array.
3. a kind of unsteady attitude small satellite communication device for recalling array based on direction according to claim 1, special
Sign is, the RF front-end circuit part, including 4 RF front-end circuits, is the first RF front-end circuit, second respectively
RF front-end circuit, third RF front-end circuit and the 4th RF front-end circuit；Each RF front-end circuit includes single-pole single-throw(SPST
Switch, duplexer, three-in-one combiner, two-in-one combiner, 6 throw switch of hilted broadsword, low-noise amplifier, low-pass filter, work(
Rate amplifier；The signal input part of low-noise amplifier is connect with the signal output end of two-in-one combiner, signal output end with
The signal receiving end of software radio part connects；The signal input part of two-in-one combiner respectively with 2 three-in-one combiners
Signal output end connection；The signal input part of each three-in-one combiner is connect with 3 duplexers respectively；Each duplexer with
Single-pole single-throw switch (SPST) connects；Single-pole single-throw switch (SPST) also connect with antenna and is communicated；The controlling switch of single-pole single-throw switch (SPST) also with
Signal processor connects；The signal input part of low-pass filter is connect with the transmitting terminal of software radio part, low-pass filter
Signal output end and power amplifier signal input part connect；The signal output end of power amplifier and 6 throw switch of hilted broadsword
Signal input part connection；6 throw switch signal output end of hilted broadsword is connect with 6 duplexers respectively, and the control of 6 throw switch of hilted broadsword is drawn
Foot is also connect with signal processor.
4. a kind of unsteady attitude small satellite communication device for recalling array based on direction according to claim 3, special
Sign is that the RF front-end circuit, 24 single-pole single-throw switch (SPST)s connect with 1 pair of antenna on each face of regular hexahedron respectively
It connects.
5. a kind of unsteady attitude small satellite communication device for recalling array based on direction according to claim 1, special
Sign is, the software radio part, including the first RF transceiver, the second RF transceiver and signal processor；Letter
Number processor is connect with the first RF transceiver, the second RF transceiver respectively, and the first RF transceiver is also penetrated with first respectively
The signal input part of the low-pass filter of frequency front-end circuit and the signal output end of low-noise amplifier, the second RF front-end circuit
The signal input part of low-pass filter connected with the signal output end of low-noise amplifier；Second RF transceiver is respectively with
The signal input part of the low-pass filter of three RF front-end circuits and the signal output end of low-noise amplifier, the 4th radio-frequency front-end
The signal input part of the low-pass filter of circuit is connected with the signal output end of low-noise amplifier.
6. a kind of unsteady attitude small satellite communication device for recalling array based on direction according to claim 5, special
Sign is that first RF transceiver and the second RF transceiver, are the transceivers of radio frequency receiving and transmitting front end integrated circuit, packet
It includes sequentially connected reception frequency mixer, receive second filter and analog-digital converter；Further include sequentially connected transmitting mixer,
Emission filter and digital analog converter；Receive the signal of the low-noise amplifier of mixer signal input terminal and RF front-end circuit
Output end connects；The signal output end of analog-digital converter and the data input output ports of signal processor connect；Digital-to-analogue conversion
The signal input part of device and the data input output ports of signal processor connect；The signal output end of second frequency mixing module with penetrate
The signal input part of the low-pass filter of frequency front-end circuit connects.
7. a kind of unsteady attitude small satellite communication device for recalling array based on direction according to claim 5, special
Sign is that the signal processor is the signal processor based on FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820160361.6U CN207977954U (en) | 2018-01-31 | 2018-01-31 | A kind of unsteady attitude small satellite communication device for recalling array based on direction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820160361.6U CN207977954U (en) | 2018-01-31 | 2018-01-31 | A kind of unsteady attitude small satellite communication device for recalling array based on direction |
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|---|---|---|---|
| CN201820160361.6U Expired - Fee Related CN207977954U (en) | 2018-01-31 | 2018-01-31 | A kind of unsteady attitude small satellite communication device for recalling array based on direction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123734A (en) * | 2018-01-31 | 2018-06-05 | 桂林电子科技大学 | A kind of unsteady attitude small satellite communication device based on direction backtracking array |
| CN111262604A (en) * | 2020-01-21 | 2020-06-09 | 武汉大学 | Beam self-tracking full-duplex communication system and method based on direction backtracking antenna |
-
2018
- 2018-01-31 CN CN201820160361.6U patent/CN207977954U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123734A (en) * | 2018-01-31 | 2018-06-05 | 桂林电子科技大学 | A kind of unsteady attitude small satellite communication device based on direction backtracking array |
| CN111262604A (en) * | 2020-01-21 | 2020-06-09 | 武汉大学 | Beam self-tracking full-duplex communication system and method based on direction backtracking antenna |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20181016 Termination date: 20190131 |