CN203465419U - Communication satellite reflection signal remote sensing monitoring system - Google Patents
Communication satellite reflection signal remote sensing monitoring system Download PDFInfo
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- CN203465419U CN203465419U CN201320543120.7U CN201320543120U CN203465419U CN 203465419 U CN203465419 U CN 203465419U CN 201320543120 U CN201320543120 U CN 201320543120U CN 203465419 U CN203465419 U CN 203465419U
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Abstract
The utility model relates to a communication satellite reflection signal remote sensing monitoring system. The system comprises a communication satellite which continuously emits direct microwave signals of a number of different work wave bands, a remote sensing platform, a reflection signal receiver which is arranged on the remote sensing platform, and an aluminum plate which is arranged on the top of the reflection signal receiver. The reflection signal receiver receives reflection microwave signals, which are reflected by the ground, of the direct microwave signals of a number of different work wave bands, and carries out separation, amplification, analog to digital conversion and digital processing on the reflection microwave signals according to different work wave bands, so as to acquire a one-dimensional power waveform, which is used for ground feature remote sensing monitoring, of different work wave bands. According to the utility model, the communications satellite is a geostationary satellite, so that the observation geometry does not change with time, and the disadvantage that the observation geometry changes of GNSS-R can be overcome; and a number of work wave bands are provided by the communication satellite, so that the system can be used in many different application fields.
Description
Technical field
The utility model relates to a kind of telstar reflected signal remote sense monitoring system.
Background technology
Optics, infrared and microwave remote sensing are the main remote sensings of earth observation, and its corresponding sensor is operated in respectively visible ray, infrared and microwave region.But there is limitation separately in these remote sensings, simplified summary is as follows: optics and infrared remote sensing are limited to weather conditions, can not round-the-clock all weather operations; Microwave remote sensing has overcome this shortcoming, and SAR spatial resolution is high, but temporal resolution cannot meet the demand of Real-Time Monitoring, and cost is higher, and passive microwave remote sensing also can be subject to the restriction compared with low spatial resolution.
Emerging GLONASS (Global Navigation Satellite System) reflected signal GNSS-R(Global Navigation Satellite System-Reflection) remote sensing technology is to utilize the reflected signal of Navsat to carry out remote sensing to atural object.Compare with ocean, land face microwave remote sensing means such as existing scatterometer, radar altimeter, synthetic-aperture radar, Navsat group GNSS can provide the signal of L-band endlessly, and do not need to develop special transmitter, a receiver of GNSS-R is a plurality of satellite-signals in field of view of receiver simultaneously, aspect remote sensing mechanism, belonging to two station/multistation radar modes, this mode of operation can improve spatial and temporal resolution greatly; Meanwhile, owing to being operated in the L-band that penetrability is stronger, so can monitor all-time anf all-weather.In addition, GNSS-R receiver belongs to passive reception, itself does not need to transmit, so volume and weight is all very little, needed power consumption is also little, therefore, has convenient, feature flexibly in atural object monitoring.GNSS Navsat will provide accurate, free detectable signal for the mankind in coming few decades, and this detectable signal has long-term stability, therefore, this technology for monitoring atural object, analyze feature changes rule etc. ideal means be provided.
As shown in Figure 1, GNSS-R remote sensing system of the prior art comprises a plurality of GNSS satellite 1' and a GNSS-R receiver 2' substantially, wherein, each GNSS satellite 1' launches L-band direct signal endlessly, after earth surface reflection, by special GNSS-R receiver 2', received, form two station/multistation radar operation modes.Yet a feature of this GNSS-R remote sensing system is the observation how much constantly changing, and its service band only has L-band, and it is restricted in its remote sensing application.Existing GNSS-R remote sensing system still cannot meet monitoring needs completely as can be seen here.
Telstar (communications satellite) is the artificial earth satellite as communication relay point, and telstar is used for forwarding radio signal, with realize between satellite communication earth station or earth station and spacecraft between communicate by letter.
The telstar of China mainly contains:
Dongfanghong: Dongfanghong-1 satellite, dfh-2 satellite, Dongfanghong-III satellite, No. four satellites of Dongfanghong;
Prosperous promise: No. one, prosperous promise, No. two, prosperous promise, No. three, prosperous promise, No. four, prosperous promise, No. five, prosperous promise, No. six, prosperous promise;
Culminant star: culminant star 5A, culminant star 6B, No. 8, culminant star, No. 9, culminant star, No. 10, culminant star, No. 11, culminant star;
Asia-Pacific: No. five, 2R, Asia-Pacific, Asia-Pacific satellite, No. six, Asia-Pacific satellite, No. seven, Asia-Pacific satellite;
Wherein, " No. six, prosperous promise " communication broadcast satellite is mounted with 24 C band transponder, 8 Ku band transponder and 1 S band transponder, satellite beams can cover the Asian-Pacific area and the part neighboring countries and regions that comprise that China is whole, therefore, than GNSS satellite, the power of " No. six, prosperous promise " is higher, capacity is larger, signal cover is wider.
Because telstar is operated in a plurality of microwave regions (C, Ku and S-band), and signal power is larger, therefore can become effective microwave rf generator, only utilized at present the direct signal of telstar, and its direct signal was not utilized through the reflective information of clutter reflections, therefore, in view of similar to GNSS-R Remote Sensing Principles, can research and develop a kind of telstar reflected signal remote sense monitoring system using telstar as effective emissive source, so that more service band to be provided.
Utility model content
The problem existing in order to solve above-mentioned prior art, the utility model aims to provide a kind of telstar reflected signal remote sense monitoring system, to overcome the shortcoming of observation Geometrical change, and provides multiple service band, to meet monitoring requirement.
A kind of telstar reflected signal remote sense monitoring system described in the utility model, comprising:
Launch continuously the telstar of the direct projection microwave signal of a plurality of different operating wave bands;
Remote-sensing flatform;
Be arranged on the reflection signal receiver on described remote-sensing flatform, the reflected microwave signal of the direct projection microwave signal of the described a plurality of different operating wave bands of its reception after earth surface reflection, and according to described different operating wave band, described reflected microwave signal is carried out after separation, amplification, analog to digital conversion and digital processing, obtain for the One-dimensional power oscillogram under the described different operating wave band of atural object remote sensing monitoring; And
Be arranged on the aluminium sheet on described reflection signal receiver top, it reflects the described direct projection microwave signal directly receiving, and the described reflected microwave signal directly receiving from described earth's surface is transferred to described reflection signal receiver.
In above-mentioned telstar reflected signal remote sense monitoring system, described reflection signal receiver comprises:
A plurality of Anneta modules that receive respectively the reflected microwave signal under described different operating wave band;
A plurality of RF front-end modules that are connected with described Anneta module respectively, described in each, RF front-end module receives the described reflected microwave signal of corresponding described Anneta module output, and this reflected microwave signal is carried out exporting corresponding radiofrequency signal after amplification filtering;
A plurality of hyperchannel Receiver Modules that are connected with described RF front-end module respectively, described in each, hyperchannel Receiver Module carries out exporting corresponding intermediate-freuqncy signal after amplification filtering to corresponding described radiofrequency signal;
A plurality of high-speed a/d modules that are connected with described hyperchannel Receiver Module respectively, described in each, high-speed a/d module carries out exporting corresponding sampled signal after analog to digital conversion to corresponding described intermediate-freuqncy signal;
A plurality of digital signal processing modules that are connected with described high-speed a/d module respectively, described in each, digital signal processing module carries out exporting corresponding original sampling data after digital processing to corresponding described sampled signal; And
A plurality of waveform shaping modules that are connected with described digital signal processing module respectively, described in each, waveform shaping module forms the One-dimensional power oscillogram under described different operating wave band according to corresponding original sampling data.
In above-mentioned telstar reflected signal remote sense monitoring system, described in each, Anneta module comprises the horizontal polarization subsignal that is respectively used to receive in described reflected microwave signal and horizontally-polarized antenna and the vertical polarized antenna of vertical polarization subsignal.
In above-mentioned telstar reflected signal remote sense monitoring system, described in each, RF front-end module comprises successively and to connect:
Transmitting path unit, it is for carrying out power amplification and filtering to described reflected microwave signal; And
Receiving path unit, it amplifies and filtering again for the described reflected microwave signal of overpower amplification and filtering is carried out to low noise, and exports described radiofrequency signal.
In above-mentioned telstar reflected signal remote sense monitoring system, described transmitting path unit comprises power amplifier and the first wave filter connecting successively.
In above-mentioned telstar reflected signal remote sense monitoring system, described receiving path unit comprises low noise amplifier and the second wave filter connecting successively.
In above-mentioned telstar reflected signal remote sense monitoring system, described digital signal processing module comprises connected DSP(digital signal processing) chip and FPGA(field programmable gate array) chip.
In above-mentioned telstar reflected signal remote sense monitoring system, described aluminium sheet is arranged on the top of described reflection signal receiver by a support.
Owing to having adopted above-mentioned technical solution, the utility model utilizes the microwave signal of existing telstar transmitting as signal source, and this signal is reflected signal receiver and receives after earth surface reflection, thereby realizes remote sensing of the earth monitoring.Different from existing GNSS-R remote sensing monitoring mode is, because telstar is satellite, therefore observe several why not temporal evolutions, thereby can overcome the shortcoming of the observation Geometrical change of GNSS-R, and compared to the GNSS-R remote sensing system that L-band is only provided, the service band that telstar in the utility model (as No. six, prosperous promise) provides is more (as C-band, Ku wave band and S-band), and for different service bands, to soil moisture, vegetation, the ability of the atural object parameter detection such as accumulated snow is different, therefore, the utility model can be used in a plurality of different applications.
Accompanying drawing explanation
Fig. 1 is the structural representation of GNSS-R remote sensing system of the prior art;
Fig. 2 is the structural representation of a kind of telstar reflected signal remote sense monitoring system of the present utility model;
Fig. 3 is the structural representation of the reflection signal receiver in a kind of telstar reflected signal remote sense monitoring system of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, provide preferred embodiment of the present utility model, and be described in detail.
As shown in Figure 2,3, the utility model, i.e. a kind of telstar reflected signal remote sense monitoring system, comprising:
Launch continuously the telstar 1 of the direct projection microwave signal of a plurality of different operating wave bands;
Remote-sensing flatform 2;
Be arranged on the reflection signal receiver 3 on remote-sensing flatform 2, the reflected microwave signal of its direct projection microwave signal that receives a plurality of different operating wave bands after earth surface reflection, and according to different operating wave band, reflected microwave signal is carried out after separation, amplification, analog to digital conversion and digital processing, obtain for the One-dimensional power oscillogram under the different operating wave band of atural object remote sensing monitoring; And
By support 5, be arranged on the aluminium sheet 4 on reflection signal receiver 3 tops, it reflects the direct projection microwave signal directly receiving, and the reflected microwave signal directly receiving from earth's surface is transferred to reflection signal receiver 3.
A plurality of Anneta modules 31 that receive respectively the reflected microwave signal under different operating wave band; Specifically, each Anneta module 31 comprises level (H) the polaron signal that is respectively used to receive in reflected microwave signal and horizontally-polarized antenna 311 and the vertical polarized antenna 312 of vertical (V) polaron signal;
A plurality of RF front-end module 32(RF front-end modules 32 that are connected with Anneta module 31 are respectively near Anneta module 31), each RF front-end module 32 receives the reflected microwave signal of corresponding Anneta module 31 outputs, and this reflected microwave signal is carried out exporting corresponding radiofrequency signal after amplification filtering; Specifically, each RF front-end module 32 comprises successively and to connect: transmitting path unit 321, and it comprises power amplifier 3211 and the first wave filter 3212 connecting successively, for reflected microwave signal is carried out to power amplification and filtering; And receiving path unit 322, it comprises the low noise amplifier 3221(LNA connecting successively) and the second wave filter 3222, for being carried out to low noise, the reflected microwave signal of overpower amplification and filtering amplifies and filtering again, can be effectively to the useful radiofrequency signal of subordinate's circuit transmission thereby guarantee;
A plurality of hyperchannel Receiver Modules 33 that are connected with RF front-end module 32 respectively, 33 pairs of corresponding radiofrequency signals of each hyperchannel Receiver Module carry out exporting corresponding intermediate-freuqncy signal after amplification filtering;
A plurality of high-speed a/d modules 34 that are connected with hyperchannel Receiver Module 33 respectively, 34 pairs of corresponding intermediate-freuqncy signals of each high-speed a/d module carry out exporting corresponding sampled signal after analog to digital conversion;
A plurality of digital signal processing modules 35 that are connected with high-speed a/d module 34 respectively, 35 pairs of corresponding sampled signals of each digital signal processing module carry out exporting corresponding original sampling data after digital processing; Specifically, each digital signal processing module 35 comprises connected dsp chip 351 and fpga chip 352; And
A plurality of waveform shaping modules 36 that are connected with digital signal processing module 35 respectively, each waveform shaping module 36 forms the One-dimensional power oscillogram under different operating wave band according to corresponding original sampling data; In the present embodiment, this waveform shaping module 36 can adopt existing hardware chip in prior art to realize.
The principle of work of above-mentioned telstar reflected signal remote sense monitoring system is as follows:
First, telstar 1 is launched the direct projection microwave signal of a plurality of different operating wave bands continuously;
Secondly, the direct projection microwave signal that 4 pairs of aluminium sheets directly receive reflects, and the reflected microwave signal of the direct projection microwave signal of a plurality of different operating wave bands that directly receive from earth's surface is transferred to reflection signal receiver 3;
Finally, the reflected microwave signal of the direct projection microwave signal of a plurality of different operating wave bands of reflection signal receiver 3 reception after earth surface reflection, and according to different operating wave band, reflected microwave signal is carried out after separation, amplification, analog to digital conversion and digital processing, obtain for the One-dimensional power oscillogram under the different operating wave band of atural object remote sensing monitoring; Specifically, finally this step comprises:
By a plurality of Anneta modules 31, receive respectively the reflected microwave signal under different operating wave band;
By a plurality of RF front-end modules 32, respectively the reflected microwave signal under different operating wave band is carried out to amplification filtering, and export corresponding radiofrequency signal;
By a plurality of hyperchannel Receiver Modules 33, respectively corresponding radiofrequency signal is carried out to amplification filtering, and export corresponding intermediate-freuqncy signal;
By a plurality of high-speed a/d modules 34, respectively corresponding intermediate-freuqncy signal is carried out to analog to digital conversion, and export corresponding sampled signal;
By a plurality of digital signal processing modules 35, respectively corresponding sampled signal is carried out to digital processing, and export corresponding original sampling data; And
By a plurality of waveform shaping modules 36, according to corresponding original sampling data, form the One-dimensional power oscillogram under different operating wave band respectively.
Existing " No. six, the prosperous promise " telstar of take is below example, again principle of work of the present utility model is described.
" No. six, prosperous promise " launches C-band continuously, direct projection microwave signal under Ku wave band and S-band, the reflected microwave signal receiver 3 that these direct projection microwave signals are equipped on remote-sensing flatform 2 after earth surface reflection receives, aluminium sheet 4 in system is due to total reflection can occur, therefore directly into the direct projection microwave signal that is incident upon aluminium sheet 4 surfaces, can be reflected completely, and then can not be reflected signal receiver 3 and receive, simultaneously, if the reflected microwave signal of direct projection microwave signal after earth surface reflection directly received by aluminium sheet 4, also can after aluminium sheet 4 reflections, be reflected signal receiver 3 receives, thereby guaranteed that reflection signal receiver 3 only receives the reflected microwave signal through earth surface reflection, and can not receive direct projection microwave signal.Reflection signal receiver 3 can receive C, the Ku of " No. six, prosperous promise " and the reflected microwave signal of S-band by three Anneta modules 31 simultaneously, and after receiving reflected microwave signal, by other modules in reflection signal receiver 3, the reflected microwave signal under three kinds of service bands is carried out after separation, amplification, analog to digital conversion and digital processing, obtain the One-dimensional power oscillogram of C-band, Ku wave band and S-band, finally utilize these power waveforms figure can carry out atural object remote sensing monitoring.
In sum, the utlity model has following beneficial effect:
1, the utility model, using the signal of existing telstar transmitting as emissive source, adopts special reflection signal receiver to receive the reflected signal of telstar; Compare with microwave remote sensors such as radars with existing microwave radiometer, this kind remote sense monitoring system cost is low, power consumption is little, simple to operate, maneuverability;
2, compare with existing GNSS-R receiver, because telstar is satellite, so adopt the formed remote sensing system observation of reflection signal receiver of the present utility model to fix for how much, overcome how much continuous shortcomings that change of observation of GNSS-R remote sense monitoring system;
3, compare with the L-band of existing GNSS-R remote sense monitoring system, the service band more (such as the microwave region that comprises the telstars such as C, Ku and S-band) of remote sense monitoring system of the present utility model, therefore, can be applied in multiple different field, realize the detection to multiple atural object parameter.
Above-described, be only preferred embodiment of the present utility model, not in order to limit scope of the present utility model, above-described embodiment of the present utility model can also make a variety of changes.Be that simple, the equivalence that every claims according to the utility model application and description are done changes and modify, all fall into the claim protection domain of the utility model patent.The utility model not detailed description be routine techniques content.
Claims (8)
1. a telstar reflected signal remote sense monitoring system, is characterized in that, described system comprises:
Launch continuously the telstar of the direct projection microwave signal of a plurality of different operating wave bands;
Remote-sensing flatform;
Be arranged on the reflection signal receiver on described remote-sensing flatform, the reflected microwave signal of the direct projection microwave signal of the described a plurality of different operating wave bands of its reception after earth surface reflection, and according to described different operating wave band, described reflected microwave signal is carried out after separation, amplification, analog to digital conversion and digital processing, obtain for the One-dimensional power oscillogram under the described different operating wave band of atural object remote sensing monitoring; And
Be arranged on the aluminium sheet on described reflection signal receiver top, it reflects the described direct projection microwave signal directly receiving, and the described reflected microwave signal directly receiving from described earth's surface is transferred to described reflection signal receiver.
2. telstar reflected signal remote sense monitoring system according to claim 1, is characterized in that, described reflection signal receiver comprises:
A plurality of Anneta modules that receive respectively the reflected microwave signal under described different operating wave band;
A plurality of RF front-end modules that are connected with described Anneta module respectively, described in each, RF front-end module receives the described reflected microwave signal of corresponding described Anneta module output, and this reflected microwave signal is carried out exporting corresponding radiofrequency signal after amplification filtering;
A plurality of hyperchannel Receiver Modules that are connected with described RF front-end module respectively, described in each, hyperchannel Receiver Module carries out exporting corresponding intermediate-freuqncy signal after amplification filtering to corresponding described radiofrequency signal;
A plurality of high-speed a/d modules that are connected with described hyperchannel Receiver Module respectively, described in each, high-speed a/d module carries out exporting corresponding sampled signal after analog to digital conversion to corresponding described intermediate-freuqncy signal;
A plurality of digital signal processing modules that are connected with described high-speed a/d module respectively, described in each, digital signal processing module carries out exporting corresponding original sampling data after digital processing to corresponding described sampled signal; And
A plurality of waveform shaping modules that are connected with described digital signal processing module respectively, described in each, waveform shaping module forms the One-dimensional power oscillogram under described different operating wave band according to corresponding original sampling data.
3. telstar reflected signal remote sense monitoring system according to claim 2, it is characterized in that, described in each, Anneta module comprises the horizontal polarization subsignal that is respectively used to receive in described reflected microwave signal and horizontally-polarized antenna and the vertical polarized antenna of vertical polarization subsignal.
4. telstar reflected signal remote sense monitoring system according to claim 2, is characterized in that, described in each, RF front-end module comprises successively and to connect:
Transmitting path unit, it is for carrying out power amplification and filtering to described reflected microwave signal; And
Receiving path unit, it amplifies and filtering again for the described reflected microwave signal of overpower amplification and filtering is carried out to low noise, and exports described radiofrequency signal.
5. telstar reflected signal remote sense monitoring system according to claim 4, is characterized in that, described transmitting path unit comprises power amplifier and the first wave filter connecting successively.
6. according to the telstar reflected signal remote sense monitoring system described in claim 4 or 5, it is characterized in that, described receiving path unit comprises low noise amplifier and the second wave filter connecting successively.
7. telstar reflected signal remote sense monitoring system according to claim 2, is characterized in that, described digital signal processing module comprises connected dsp chip and fpga chip.
8. telstar reflected signal remote sense monitoring system according to claim 1 and 2, is characterized in that, described aluminium sheet is arranged on the top of described reflection signal receiver by a support.
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| CN201320543120.7U CN203465419U (en) | 2013-09-02 | 2013-09-02 | Communication satellite reflection signal remote sensing monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412303A (en) * | 2013-09-02 | 2013-11-27 | 中国科学院上海天文台 | Communication satellite reflected signal remote sensing monitoring system and monitoring method thereof |
| CN104570844A (en) * | 2014-12-09 | 2015-04-29 | 山东航向电子科技有限公司 | Navigation direct-reflected signal collaborative collecting device collocated on microcomputer |
| CN104698150A (en) * | 2014-12-24 | 2015-06-10 | 山东航向电子科技有限公司 | Device and method for measuring surface domain soil humidity based on global navigation satellite system-reflection (GNSS-R) |
| WO2016145723A1 (en) * | 2015-03-19 | 2016-09-22 | 中国科学院空间科学与应用研究中心 | River flow speed measuring method and system based on gnss-r technology |
-
2013
- 2013-09-02 CN CN201320543120.7U patent/CN203465419U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412303A (en) * | 2013-09-02 | 2013-11-27 | 中国科学院上海天文台 | Communication satellite reflected signal remote sensing monitoring system and monitoring method thereof |
| CN104570844A (en) * | 2014-12-09 | 2015-04-29 | 山东航向电子科技有限公司 | Navigation direct-reflected signal collaborative collecting device collocated on microcomputer |
| CN104698150A (en) * | 2014-12-24 | 2015-06-10 | 山东航向电子科技有限公司 | Device and method for measuring surface domain soil humidity based on global navigation satellite system-reflection (GNSS-R) |
| WO2016145723A1 (en) * | 2015-03-19 | 2016-09-22 | 中国科学院空间科学与应用研究中心 | River flow speed measuring method and system based on gnss-r technology |
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