CN102914779A - Measuring device of global navigation satellite system - Google Patents
Measuring device of global navigation satellite system Download PDFInfo
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- CN102914779A CN102914779A CN2012104221714A CN201210422171A CN102914779A CN 102914779 A CN102914779 A CN 102914779A CN 2012104221714 A CN2012104221714 A CN 2012104221714A CN 201210422171 A CN201210422171 A CN 201210422171A CN 102914779 A CN102914779 A CN 102914779A
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Abstract
The invention provides a measuring device of a global navigation satellite system (GNSS). The measuring device comprises a data transmission radio module, a GNSS processing module, a power control module, a central processing module and a human-computer interaction module, wherein the data transmission radio module is electrically connected with the central processing module, and comprises a receiving module and a transmitting module which are formed integrally; the GNSS processing module is electrically connected with the central processing module; the power control module is electrically connected with the central processing module; the power control module supplies power for the data transfer radio module, the GNSS processing module, the central processing module and the human-computer interaction module; and the human-computer interaction module is electrically connected with the central processing module. The receiving function and the transmitting function of the data transmission radio module are integrally combined and the data transmission radio module is embedded into the measuring device of the GNSS, so the size of the measuring device is reduced, the measuring device is convenient to carry, the work efficiency of workers is improved, data is transmitted more reliably and unnecessary failure is avoided.
Description
Technical field
The present invention relates to a kind of measurement mechanism, particularly a kind of measurement mechanism of global navigation satellite system GNSS.
Background technology
GNSS is the abbreviation of Global Navigation Satellite System.Chinese translation is GLONASS (Global Navigation Satellite System), and it is a kind of take the radio navigation system of satellite as the basis.This system can send high precision, round-the-clock, round-the-clock, continuous real-time navigation, location and time service information, is a kind of information resources of sharing for the army and the people user in aeroamphibious field.Satellite navigation location refers to utilize satellite navigation and location system to provide the information such as position, speed and time to finish location, navigation, detection and management to all types of target.
Along with developing rapidly of GNSS technology, the application of GNSS in measurement is more and more universal, more and more important.Data radio station is a kind of very important data transfer tool in the GNSS measuring equipment, but because the requirement on the GNSS measuring equipment volume, what the mode of operation of present most GNSS measuring equipment all adopted is the radio station that the built-in radio station of accepting function adds plug-in emission function.Because the general volume in radio station of plug-in emission function is larger, also need simultaneously to be equipped with comparatively heavy storage battery, this has brought great inconvenience to the staff who carries out field survey, badly influences the work efficiency of survey crew.
Summary of the invention
The present invention proposes a kind of GLONASS (Global Navigation Satellite System) measurement mechanism, has solved the large and ineffective problem of measurement mechanism volume in the prior art, and it is simple in structure, and volume is little, and transmission is reliable.By receiving function and emission function are carried out the integral fusion processing, be embedded in the GLONASS (Global Navigation Satellite System) measurement mechanism, thereby reduce the volume of GLONASS (Global Navigation Satellite System) measurement mechanism, concerning the staff, carry easily, and do not take up room, improve staff's work efficiency, in addition, with receiving function and emission function integral fusion, so that data transmission is more reliable, avoid unnecessary fault.
Technical scheme of the present invention is achieved in that
A kind of GLONASS (Global Navigation Satellite System) measurement mechanism, it comprises data radio station module, global navigation satellite system GNSS processing module, energy supply control module, central processing module and human-computer interaction module;
Described data radio station module and described central processing module are electrically connected, and described data radio station module comprises receiver module and transmitter module, and described receiver module and described transmitter module are one-body molded;
Described global navigation satellite system GNSS processing module and described central processing module are electrically connected;
Described energy supply control module and described central processing module are electrically connected, and described energy supply control module is used for providing power supply to described data radio station module, described GNSS processing module, described central processing module and described human-computer interaction module;
Described human-computer interaction module and described central processing module are electrically connected.
Further, described data radio station module further comprises half-duplex Data-Link module, radio-frequency (RF) circuit module and modulation circuit, and described half-duplex Data-Link module, described radio-frequency (RF) circuit module and described modulation circuit all are electrically connected.
Further, described modulation circuit is provided with the phase-locked loop pll modulator.
Further, described PLL modulator is provided with low-pass filter.
Further, described low-pass filter is Gaussian filter.
Further, described data radio station module further comprises the base band data processing module.
Further, described base band data processing module comprises Error Control module, loop detection module, Error Correction of Coding mistake processing module, data interlacing module and scramble output module.
Further, described human-computer interaction module comprises key-press module and LCD module.
GLONASS (Global Navigation Satellite System) measurement mechanism of the present invention is by one-body molded with receiver module and the transmitter module of data radio station module, so receiving function and emission function are carried out the integral fusion processing, be embedded in the GLONASS (Global Navigation Satellite System) measurement mechanism, thereby reduce the volume of GLONASS (Global Navigation Satellite System) measurement mechanism, concerning the staff, carry easily, and do not take up room, improve staff's work efficiency, in addition, with receiving function and emission function integral fusion, so that data transmission is more reliable, avoid unnecessary fault.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic block diagram of GLONASS (Global Navigation Satellite System) measurement mechanism of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
With reference to Fig. 1, a kind of GLONASS (Global Navigation Satellite System) measurement mechanism, it comprises data radio station module, global navigation satellite system GNSS processing module, energy supply control module, central processing module and human-computer interaction module; Described data radio station module and described central processing module are electrically connected, and described data radio station module comprises receiver module (not shown) and transmitter module (not shown), and described receiver module and described transmitter module are one-body molded; Described global navigation satellite system GNSS processing module and described central processing module are electrically connected; Described energy supply control module and described central processing module are electrically connected, and described energy supply control module is used for providing power supply to described data radio station module, described GNSS processing module, described central processing module and described human-computer interaction module; Described human-computer interaction module and described central processing module are electrically connected.
Further, described data radio station module further comprises half-duplex Data-Link module (not shown), radio-frequency (RF) circuit module (not shown) and modulation circuit (not shown), and described half-duplex Data-Link module, described radio-frequency (RF) circuit module and described modulation circuit all are electrically connected.Described data radio station module is nucleus module of the present invention, and described data radio station module air transfer rate reaches 9600BPS, described half-duplex Data-Link module adopts the filtering minimum deviation keying GMSK modulation mode, the 9600Bps transfer rate, the bit error rate is low, and rf frequency can cover 460 ~ 470MHz band limits.Described radio-frequency (RF) circuit module adopts advanced radio frequency high-gain, high selectivity, low noise circuit, passive mixing, high local oscillator, two VCO circuit structures.
Further, described modulation circuit is provided with phase-locked loop pll modulator (not shown).Described phase-locked loop pll modulator is our usually described 2 modulation.
Further, described PLL modulator is provided with low-pass filter.
Further, described low-pass filter is Gaussian filter.Described modulation circuit adopts the minimum shift keying of gaussian filtering to be called for short the GMSK mode, and modulation system is advanced, and data transmission is reliable, and the transceiving data amount is large.A kind of special digital modulation mode of GMSK modulation mode, preferably power spectrum characteristic is arranged, more excellent error performance, particularly out-of-band radiation is little, be applicable to be operated in very much VHF(very high frequency(VHF)) and the UHF(ultra-low frequency) mobile communication system of frequency range, VHF refers to that frequency band is by the radiobeam of 30MHz to 300MHz; Ultra-low frequency ULF refers to that frequency band is by the radiobeam of 300Hz to 3000Hz.Adopting Gaussian filter bandwidth and the ratio BT of bit rate is 0.3.The BT value is less, and the great number component decay of GMSK power spectral density of signal is faster.Main lobe is less, and the shared frequency band of signal is narrower, and the radiation of the outer energy of band is less, and monkey chatter is also less, and BT is that 0.3 GMSK modulates is not phase-modulation, but is the skew by frequency, or perhaps breath is carried in the variation of phase place.The basic principle of work of GMSK modulation is that baseband signal is shaped through Gaussian filter first, carries out minimum shift keying (MSK) modulation again.Because the Gauss pulse envelope after being shaped is without precipitous edge, also without flex point, so spectral characteristic is better than the spectral characteristic of msk signal.The GMSK signal has good frequency spectrum and power characteristic, is specially adapted to the mobile burst communication system that power limited and channel exist non-linear, decline and Doppler shift.GMSK is modulated at data throughout maximum under given bandwidth and the radio-frequency channel condition.Integrated packet data processes ability receives some regular Processing tasks of master controller, comprises the layout, cyclic redundancy check (CRC) and the processing of forward error correction coding (FEC) mistake that keep bit synchronous, frame synchronization, piece, data interlacing, scramble output etc.Detuner adopts the feedback equalization technology to reduce channel distortion (distortion), strengthens simultaneously receiver in the receptivity that does not have under the calculating prerequisite of maximum estimated method.
Further, described data radio station module further comprises base band data processing module (not shown).
Further, described base band data processing module comprises Error Control module (not shown), loop detection module (not shown), Error Correction of Coding mistake processing module (not shown), data interlacing module (not shown) and scramble output module (not shown).Described Error Control module, described loop detection module, described Error Correction of Coding mistake processing module, described data interlacing module and described scramble output module all are electrically connected.When loop detection module detects mistake, just with communication to Error Control module, Error Control module is just pointed out the user by warning or pilot lamp, Error Control module further is sent to Error Correction of Coding mistake processing module with information simultaneously, information is processed, made it meet user's demand.
Further, described human-computer interaction module comprises key-press module and LCD module.Human-computer interaction module can make things convenient for the user to pass through the operation push-button module and observe the work that the LCD module is controlled the GLONASS (Global Navigation Satellite System) measurement mechanism intuitively.
GLONASS (Global Navigation Satellite System) measurement mechanism of the present invention is when work, and its groundwork flow process is as follows: (1) energy supply control module is to modules power supply in the GLONASS (Global Navigation Satellite System) measurement mechanism; (2) the GNSS processing module receives the GNSS signal that GLONASS (Global Navigation Satellite System) is sent, because GLONASS (Global Navigation Satellite System) comprises movement station and base station, so base station generates the differential corrections data; (3) send the differential corrections data that the base station that receives sends to central processing module by the data radio station module, then reach location and the purpose of measuring; (4) change the mode of operation of whole system and the frequency of operation territory passage in radio station by human-computer interaction module.So when the staff opens energy supply control module, the GLONASS (Global Navigation Satellite System) measurement mechanism is just started working, the user controls central processing unit by human-computer interaction module, corresponding instruction is sent to the global navigation satellite system GNSS processing module, so described data radio station module detects in real time to the GLONASS (Global Navigation Satellite System) measurement mechanism, to guarantee the normal operation of global navigation satellite system GNSS processing module.
GLONASS (Global Navigation Satellite System) measurement mechanism of the present invention is by one-body molded with receiver module and the transmitter module of data radio station module, so receiving function and emission function are carried out the integral fusion processing, be embedded in the GLONASS (Global Navigation Satellite System) measurement mechanism, thereby reduce the volume of GLONASS (Global Navigation Satellite System) measurement mechanism, concerning the staff, carry easily, and do not take up room, improve staff's work efficiency, in addition, with receiving function and emission function integral fusion, so that data transmission is more reliable, avoid unnecessary fault.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a GLONASS (Global Navigation Satellite System) measurement mechanism is characterized in that, it comprises data radio station module, global navigation satellite system GNSS processing module, energy supply control module, central processing module and human-computer interaction module;
Described data radio station module and described central processing module are electrically connected, and described data radio station module comprises receiver module and transmitter module, and described receiver module and described transmitter module are one-body molded;
Described GNSS processing module and described central processing module are electrically connected;
Described energy supply control module and described central processing module are electrically connected, and described energy supply control module is used for providing power supply to described data radio station module, described GNSS processing module, described central processing module and described human-computer interaction module;
Described human-computer interaction module and described central processing module are electrically connected.
2. GLONASS (Global Navigation Satellite System) measurement mechanism as claimed in claim 1, it is characterized in that, described data radio station module further comprises half-duplex Data-Link module, radio-frequency (RF) circuit module and modulation circuit, and described half-duplex Data-Link module, described radio-frequency (RF) circuit module and described modulation circuit all are electrically connected.
3. GLONASS (Global Navigation Satellite System) measurement mechanism as claimed in claim 2 is characterized in that, described modulation circuit is provided with the phase-locked loop pll modulator.
4. GLONASS (Global Navigation Satellite System) measurement mechanism as claimed in claim 3 is characterized in that, described PLL modulator is provided with low-pass filter.
5. GLONASS (Global Navigation Satellite System) measurement mechanism as claimed in claim 4 is characterized in that, described low-pass filter is Gaussian filter.
6. such as each described GLONASS (Global Navigation Satellite System) measurement mechanism among the claim 1-5, it is characterized in that described data radio station module further comprises the base band data processing module.
7. GLONASS (Global Navigation Satellite System) measurement mechanism as claimed in claim 6 is characterized in that, described base band data processing module comprises Error Control module, loop detection module, Error Correction of Coding mistake processing module, data interlacing module and scramble output module.
8. GLONASS (Global Navigation Satellite System) measurement mechanism as claimed in claim 7 is characterized in that, described human-computer interaction module comprises key-press module and LCD module.
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| CN2012104221714A CN102914779A (en) | 2012-10-26 | 2012-10-26 | Measuring device of global navigation satellite system |
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| CN2012104221714A CN102914779A (en) | 2012-10-26 | 2012-10-26 | Measuring device of global navigation satellite system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085610A (en) * | 2018-08-01 | 2018-12-25 | 广州南方卫星导航仪器有限公司 | It a kind of receiver and controls and receives machine and opens the method resolved offline |
| CN109861700A (en) * | 2019-01-09 | 2019-06-07 | 北京高森感应技术有限公司 | A kind of GNSS antenna formula signal receiver of the integrated radio station 433MHz difference |
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| US20090091496A1 (en) * | 2007-10-08 | 2009-04-09 | Whitehead Michael L | Gnss receiver and external storage device system and gnss data processing method |
| CN102176039A (en) * | 2011-01-25 | 2011-09-07 | 北京中交通信科技有限公司 | Embedded type GNSS (Global Navigation Satellite System) vehicle monitoring system for traffic industry |
| CN102244535A (en) * | 2010-05-14 | 2011-11-16 | 中国科学院国家天文台 | System with wide geographical coverage for monitoring positions in real time |
| CN202886606U (en) * | 2012-10-26 | 2013-04-17 | 广州南方卫星导航仪器有限公司 | Global navigation satellite system measuring device |
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- 2012-10-26 CN CN2012104221714A patent/CN102914779A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090091496A1 (en) * | 2007-10-08 | 2009-04-09 | Whitehead Michael L | Gnss receiver and external storage device system and gnss data processing method |
| CN102244535A (en) * | 2010-05-14 | 2011-11-16 | 中国科学院国家天文台 | System with wide geographical coverage for monitoring positions in real time |
| CN102176039A (en) * | 2011-01-25 | 2011-09-07 | 北京中交通信科技有限公司 | Embedded type GNSS (Global Navigation Satellite System) vehicle monitoring system for traffic industry |
| CN202886606U (en) * | 2012-10-26 | 2013-04-17 | 广州南方卫星导航仪器有限公司 | Global navigation satellite system measuring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085610A (en) * | 2018-08-01 | 2018-12-25 | 广州南方卫星导航仪器有限公司 | It a kind of receiver and controls and receives machine and opens the method resolved offline |
| CN109861700A (en) * | 2019-01-09 | 2019-06-07 | 北京高森感应技术有限公司 | A kind of GNSS antenna formula signal receiver of the integrated radio station 433MHz difference |
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Application publication date: 20130206 |