CN106559089A - A kind of four road remote sensing image data processing platforms - Google Patents
A kind of four road remote sensing image data processing platforms Download PDFInfo
- Publication number
- CN106559089A CN106559089A CN201611122864.6A CN201611122864A CN106559089A CN 106559089 A CN106559089 A CN 106559089A CN 201611122864 A CN201611122864 A CN 201611122864A CN 106559089 A CN106559089 A CN 106559089A
- Authority
- CN
- China
- Prior art keywords
- fpga unit
- remote sensing
- converters
- digital
- image data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
- H04B1/0014—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage using DSP [Digital Signal Processor] quadrature modulation and demodulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radio Relay Systems (AREA)
Abstract
The invention discloses a kind of high rail remote sensing image data processing platform in four tunnel.The platform includes intermediate-freuqncy signal receiver, 4 A/D converters, digital down converter, FPGA unit, digital signal processor and PCIPCI EBIs, wherein, the intermediate-freuqncy signal receiver is connected with 4 A/D converters, 4 A/D converters are connected with digital down converter, the digital down converter is connected with FPGA unit, i.e. FPGA unit connection digital signal processor and pci interface.The present invention is high, and rail remote sensing image data processing platform is provided with four A/D converters, four A/D converters are connected with digital down converter, the viewdata signal less than or equal to 100Mbps from the high rail remote sensing satellite in four tunnels can be processed simultaneously, meet the requirement of high rail remote sensing image data processing platform.
Description
Technical field
The present invention relates to high rail low speed remote sensing images demodulation process technical field, more particularly to one kind can be processed and come from 4
The image real time transfer platform of the high rail low speed remote sensing satellite in road.
Background technology
Remote sensing technology has concentrated the latest technological achievements of the subjects such as space, electronics, optics, compunication and ground, is
Human research's earth obtains the image document of a large amount of preciousnesses.Low rail high definition remote sensing images carry out national ecological environment control,
Water resources management, mineral resource value, forest inventory control, Land Resources Management, military struggle, national defense safety and all kinds of sections
Occupy an important position in learning research.The development of many scientific domains is increasingly dependent on progress and the remotely-sensed data of remote sensing technology
Acquisition capability.
High rail low speed remote sensing satellite refers to satellite of the satellite orbital altitude in more than 20000km.The high rail being currently running is low
Fast remote sensing satellite, remote sensing image data transfer rate in 600Mbps-100Mbps, the message transmission rate of high speed and in orbit
Remote sensing satellite quantity increase rapidly, it is desirable to ground receiver demodulation platform (or remote sensing image data processing platform) is with can connect
Receive the remote sensing satellite image signal of various speed, more modulation standard.And traditional remote sensing image data processing platform homonymy is only
Remote sensing satellite image signal all the way can be processed, the remote sensing image data processing platform that can not have met requirement reception multiple signals will
Ask.
The content of the invention
It is an object of the invention to provide a kind of can process the view data for coming from the high rail low speed remote sensing satellite in 4 tunnels simultaneously
Processing platform.
In order to realize foregoing invention purpose, the invention provides technical scheme below：
The high rail remote sensing image data processing platform in four tunnels of one kind, including intermediate-freuqncy signal receiver, 4 A/D converters, numerals
Low-converter (DDC), FPGA unit, digital signal processor and pci bus interface, wherein, the intermediate-freuqncy signal receiver with
The connection of 4 A/D converters, 4 A/D converters are connected with digital down converter, the digital down converter and FPGA unit
Connection, FPGA unit connection digital signal processor and interface.
Present invention also offers the high rail remote sensing image data processing platform in another form of four tunnel, including intermediate-freuqncy signal connects
Device is received, the intermediate-freuqncy signal receiver is connected with 4 A/D converters, wherein 3 A/D converters are connected with digital down converter
Connect, the digital down converter is connected with FPGA unit, FPGA unit connects digital signal processor and EBI, another
A/D converter is directly connected with FPGA unit, and FPGA unit includes digital controlled oscillator, and the digital controlled oscillator connects cascade integral
Comb filter, the cascade integral comb filter connect half-band filter, the half-band filter connecting channel multiphase
Wave filter group device.
The A/D converter is used for the numeral conversion for completing analog intermediate frequency signal；The digital down converter be used for filter,
Signal is adjusted and down-converted；On the one hand the data signal processed through digital down converter is carried out lattice by the FPGA unit
On the other hand data signal after A/D converter is changed directly is carried out down by formula conversion, semi-band filtering, demodulation and decoding
Frequency-conversion processing, then be filtered and demodulate；The digital signal processor carries out configuring calculating process to the signal for receiving, and processes
Information afterwards is exported by interface.
Compared with prior art, beneficial effects of the present invention：The present invention is high, and rail remote sensing image data processing system is provided with
Four A/D converters, four A/D converters respectively with digital down converter (or wherein three A/D converters respectively with numeral under
Frequency converter connects, and another A/D converter is directly connected with FPGA unit) connection, rail remote sensing high from four tunnels can be processed simultaneously
The viewdata signal less than or equal to 100Mbp of satellite, meets the requirement of high rail remote sensing image data processing platform.Additionally,
One of A/D converter is directly connected with FPGA unit, realizes DDC digital down converter functions using FPGA, is realized existing
The peak use rate of device, by configuring the function element that DDC digital down converters are constituted in FPGA unit, is capable of achieving to pass at a high speed
The image real time transfer of defeated speed.
Description of the drawings
Fig. 1 is the transmission of high rail remote sensing satellite bracket signal, process flow block diagram；
Fig. 2 is the high rail remote sensing image data processing platform structure block diagram in four tunnels in the embodiment of the present invention 1；
Fig. 3 is the high rail remote sensing image data processing platform structure block diagram in four tunnels in the embodiment of the present invention 2；
Fig. 4 be FPGA unit in realize Digital Down Convert process theory diagram；
Fig. 5 intermediate-freuqncy signals receiver and A/D converter catenation principle block diagram；
Fig. 6 is digital down converter and FPGA unit catenation principle block diagram；
Fig. 7 is A/D converter and FPGA unit catenation principle block diagram.
Specific embodiment
With reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
Scope for above-mentioned theme of the invention is only limitted to below example, and all technologies realized based on present invention belong to this
The scope of invention.
As shown in figure 1, the sensed image signal that remote sensing satellite sends, satellite antenna by signal Jing downlink transmissions extremely
Earth station；Earth station transmits the small-signal for receiving to low-noise amplifier FPGA unit, to ensure to receive the matter of signal
Amount；The amplified signal carries out frequency transformation through low-converter again, and signal is amplified again, exports the intermediate frequency of different frequency
Signal；The demodulated device signal-processing board of the intermediate-freuqncy signal for further amplifying is demodulated, encode after obtain corresponding information, and
Export the information.
Embodiment 1
With reference to Fig. 2, the high rail remote sensing image data processing platform in four tunnels that the present embodiment is enumerated include intermediate-freuqncy signal receiver,
4 A/D converters, digital down converter (DDC), FPGA unit, digital signal processor (DSP), and EBI, wherein,
The intermediate-freuqncy signal receiver is connected with A/D converter, and 4 A/D converters are connected with digital down converter (DDC), described
Digital down converter (DDC) is connected with FPGA unit, and FPGA unit connects digital signal processor (DSP) and interface.
The workflow of the high rail remote sensing image data processing platform in of the invention four tunnels is：Intermediate-freuqncy signal receives FPGA unit will
The analog intermediate frequency signal of reception is transmitted to A/D converter, and an A/D converter will be converted to digital letter by analog intermediate frequency signal all the way
Number, digital data transmission to each digital down converter (DDC), each digital down converter (DDC) are carried out to the data signal
Filtering, signal adjustment and down-converted, are then transmit to FPGA unit, and FPGA unit is to the numeral letter through down-converted
Number enter row format conversion, semi-band filtering, demodulation, decoding；Digital signal processor (DSP) is configured to the data signal for receiving
Calculating process, digital demodulation process, the signal after process are returned again to FPGA unit, the signal Jing FPGA units filtering after process
Exported by pci bus interface afterwards, pci bus interface is connected to computer and disk array, and the information is deposited by 10 RAID cards
Storage facilitates the research of researcher in computer disk array.
Claims (2)
1. the high rail remote sensing image data processing platform in a kind of four tunnel, it is characterised in that the platform include intermediate-freuqncy signal receiver, 4
Individual A/D converter, digital down converter, FPGA unit, digital signal processor and pci bus interface, wherein, the intermediate frequency
Signal receiver is connected with 4 A/D converters, and 4 A/D converters are connected with digital down converter, the Digital Down Convert
Device is connected with FPGA unit, and FPGA unit connects digital signal processor and interface.
2. the high rail remote sensing image data processing platform in a kind of four tunnel, it is characterised in that including intermediate-freuqncy signal receiver, the intermediate frequency
Signal receiver is connected with 4 A/D converters, wherein 3 A/D converters are connected with digital down converter, under the numeral
Frequency converter is connected with FPGA unit, and FPGA unit connects digital signal processor and pci bus interface, another A/D converter
Directly it is connected with FPGA unit, FPGA unit includes digital controlled oscillator, the digital controlled oscillator connection cascaded integrator-comb filtering
Device, the cascade integral comb filter connect half-band filter, the half-band filter connecting channel multiphase filter group
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611122864.6A CN106559089A (en) | 2016-12-08 | 2016-12-08 | A kind of four road remote sensing image data processing platforms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611122864.6A CN106559089A (en) | 2016-12-08 | 2016-12-08 | A kind of four road remote sensing image data processing platforms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106559089A true CN106559089A (en) | 2017-04-05 |
Family
ID=58445326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611122864.6A Pending CN106559089A (en) | 2016-12-08 | 2016-12-08 | A kind of four road remote sensing image data processing platforms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106559089A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202976207U (en) * | 2013-04-09 | 2013-06-05 | 成都林海电子有限责任公司 | Four-route remote sensing image data processing system |
| CN105472391A (en) * | 2014-08-15 | 2016-04-06 | 天津汉铭科技发展有限公司 | Remote sensing image data processing system and method thereof |
| CN205657779U (en) * | 2016-05-30 | 2016-10-19 | 重庆工程学院 | Four -route remote sensing image data processing system |
-
2016
- 2016-12-08 CN CN201611122864.6A patent/CN106559089A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202976207U (en) * | 2013-04-09 | 2013-06-05 | 成都林海电子有限责任公司 | Four-route remote sensing image data processing system |
| CN105472391A (en) * | 2014-08-15 | 2016-04-06 | 天津汉铭科技发展有限公司 | Remote sensing image data processing system and method thereof |
| CN205657779U (en) * | 2016-05-30 | 2016-10-19 | 重庆工程学院 | Four -route remote sensing image data processing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104104400B (en) | The spaceborne ADS-B Signal reception machine of highly sensitive | |
| CN101833100B (en) | Method for constructing fully-digital GNSS compatible navigation receiver | |
| CN201523380U (en) | Relay observation and control responder satellite observation and control allocation system with controllable priority levels | |
| EP2546678A1 (en) | Multichannel, multimode, multifunction L-band radio transreceiver | |
| CN104506818A (en) | Data integrated acquisition, control and transmission system applicable to Beidou unmanned gyrocopter | |
| CN205232209U (en) | Signal reception circuit, phased array antenna and trackside unit based on zero intermediate frequency | |
| CN110350946A (en) | A kind of spread spectrum answering machine and implementation method based on SOC chip | |
| CN102801434B (en) | Satellite-borne measurement and control receiver | |
| CN104158561B (en) | A kind of HF frequency hopping processing method | |
| EP2031771A3 (en) | Communication system and method of receiving high priority signals and low priority signals | |
| CN107144862A (en) | Big Dipper data collecting instrument | |
| JP2010278848A (en) | Movable information collection device | |
| CN206948336U (en) | A kind of small-sized BPM shortwaves time service control system and control board | |
| CN102355297A (en) | Receiver array based aviation telemetering system and implementation method thereof | |
| CN103856257A (en) | Satellite communication gateway station signal demodulation processing board | |
| CN204694850U (en) | The radio-frequency transmitter of the Big Dipper No. two satellite navigation system channel structures | |
| CN106559089A (en) | A kind of four road remote sensing image data processing platforms | |
| CN111812686B (en) | Navigation signal receiver and clock distribution method thereof | |
| CN208902880U (en) | Radio frequency handling device applied to LEO occultation system | |
| CN110542935A (en) | High-altitude meteorological detection and transmission method and system | |
| CN205039805U (en) | End device before shortwave is received | |
| CN202976207U (en) | Four-route remote sensing image data processing system | |
| CN203573128U (en) | FPGA-based multi-channel data acquisition system | |
| CN209055658U (en) | A kind of GPS BD bimodulus single channel intermediate-freuqncy signal acquisition system | |
| US20110216859A1 (en) | High-Frequency Signal Receiver Simultaneously Receiving Several Such Signals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170405 |
|
| WD01 | Invention patent application deemed withdrawn after publication |