CN201936012U - Simple one-key global positioning system (GPS) simulator - Google Patents
Simple one-key global positioning system (GPS) simulator Download PDFInfo
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- CN201936012U CN201936012U CN2010206964313U CN201020696431U CN201936012U CN 201936012 U CN201936012 U CN 201936012U CN 2010206964313 U CN2010206964313 U CN 2010206964313U CN 201020696431 U CN201020696431 U CN 201020696431U CN 201936012 U CN201936012 U CN 201936012U
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Abstract
The utility model discloses a simple one-key global positioning system (GPS) simulator comprising a casing and an analog circuit arranged in the casing, wherein the analog circuit mainly comprises a digital signal processor (DSP) information processing module, a field programmable gate array (FPGA) signal processing module, a digital/analog (D/A) conversion module, an upper frequency conversion module and a scene data module; the DSP information processing module is connected with the FPGA signal processing module, an output end of the FPGA signal processing module passes through the D/A conversion module and then is connected to the upper frequency conversion module, an output end of the upper frequency conversion module is connected with a GPS signal output port arranged on the casing, a control input end of the scene data module is connected with scene selection keys arranged on the casing, and an output end of the scene data module is connected to the FPGA signal processing module. The utility model has the characteristics of small size, easiness for carrying and convenience for operation.
Description
Technical field
The utility model relates to the gps satellite navigation field, is specifically related to a kind of one-touch easy GPS simulator.
Background technology
In the production of GPS receiver, debugging, research process, needing to measure receiver receives and positioning performance satellite-signal, and the location availability of receiver under complex environments such as missile-borne, obtain such statistical property, can not carry out the practical flight checking of big quantity.For under the static environment of laboratory, realizing this class testing easily, according to relative motion principle, needn't be placed on receiver on the Space Facilities such as guided missile, star ship, only need simulator to simulate receiver received navigation satellite signal under these tracks, indoor to static receiver test, the positioning result of receiver is exactly the predefined track of simulator, can make things convenient for test receiver locating effect under high-altitude, high-speed motion condition, has saved the testing cost of receiver like this.According to such application demand, the GPS simulator just arises at the historic moment.The GPS simulator is exactly all satellite navigation signals that simulation produces gps system, and for development, the test of GPS receiver provides simulated environment, it is the critical equipment of satellite navigation system and receiver development.Yet traditional GPS simulator is when carrying out analog operation, need be used with host computer (PC), host computer communicates through serial ports and GPS simulator, the parameters such as mode of operation selections, simulating scenes management, simulation parameter configuration of setting simulator by host computer realize host computer to control of GPS simulator and demonstration, to finish the output of GPS simulating signal.Therefore equipment volume huge, be difficult to carry, inconvenient user waits the test under the environment in the open air; In addition, the operation of complicated simulator software in the host computer also seems comparatively complicated for the particularly new user of domestic consumer.
The utility model content
Technical problem to be solved in the utility model is deficiencies such as traditional GPS simulator is difficult to carry, complicated operation, and a kind of one-touch easy GPS simulator is provided.
For addressing the above problem, a kind of one-touch easy GPS simulator that the utility model is designed comprises the mimic channel that is provided with in housing and the housing; Wherein mimic channel mainly is made up of DSP message processing module, FPGA signal processing module, D/A modular converter and up-conversion module; The DSP message processing module links to each other with the FPGA signal processing module, and the output terminal of FPGA signal processing module is connected to the up-conversion module through the D/A modular converter, and the output terminal of up-conversion module links to each other with the gps signal delivery outlet that housing is provided with; Described mimic channel also comprises a contextual data module, and the control input end of this contextual data module links to each other with the scene selection key that housing is provided with, and the output terminal of contextual data module is connected to the FPGA signal processing module.
Prestore dynamic scene parameter and static scene parameter in advance in the described contextual data module of such scheme.
In order to expand its versatility, can realize self-defined scene setting simultaneously, preferably be provided with serial line interface on the described housing, the output terminal of this serial line interface links to each other with the FPGA signal processing module.The utility model can be linked to each other with host computer by this serial line interface, so just, can be by the simulator software editor scene in the host computer, select for the user provides abundant more scene, the user can be adjusted partial simulation device parameter, edit complex track more.
Also be provided with the signal attenuation knob on the described housing of such scheme, this signal attenuation knob is serially connected between up-conversion module and the gps signal delivery outlet, the input end that is the signal attenuation knob links to each other with the output terminal of up-conversion module, and the output terminal of signal attenuation knob links to each other with the input end of gps signal delivery outlet.Realize the decay output of the utility model simulating signal by conditioning signal decay knob.
For every setting of the present utility model and operational process are shown intuitively, preferably also be provided with LCDs on the above-mentioned described housing, the input end of this LCDs links to each other with the FPGA signal processing module.
Compared with prior art, prestore the scene parameter that the user uses always in the utility model contextual data module, the user can promptly can realize the setting of various test scenes easily by the scene setting button that housing is provided with like this, thereby can abandon host computer, reduce equipment volume, be easy to carry, wait test under the environment in the open air to make things convenient for the user; In addition, realize being connected of the utility model and host computer, select for the user provides abundant more scene, the user can be adjusted partial simulation device parameter, edit complex track more by host computer by serial line interface is set.
Description of drawings
Fig. 1 is the theory diagram of a kind of one-touch easy GPS simulator of the utility model.
Embodiment
Referring to Fig. 1,, comprise the mimic channel that is provided with in housing and the housing for a kind of one-touch easy GPS simulator of the utility model.Mimic channel is the core of GPS simulator, and it mainly is made up of DSP message processing module, FPGA signal processing module, D/A modular converter and up-conversion module.The DSP message processing module links to each other with the FPGA signal processing module, and the output terminal of FPGA signal processing module is connected to the up-conversion module through the D/A modular converter, and the output terminal of up-conversion module links to each other with the gps signal delivery outlet that housing is provided with.In order to break away from host computer, and directly on the GPS simulator, carry out the setting of scene, mimic channel described in the utility model also comprises a contextual data module, the control input end of this contextual data module links to each other with the scene selection key that housing is provided with, and the output terminal of contextual data module is connected to the FPGA signal processing module.Prestore the test scene information that the user uses always in the contextual data module, in the utility model preferred embodiment, prestore dynamic scene parameter and static scene parameter in the contextual data module.As prestore in the contextual data module latitude, longitude, highly, static scene parameter such as emulation zero-time and duration; And initial latitude, initial longitude, elemental height, initial east orientation speed, initial north orientation speed, initial high to dynamic scene parameters such as speed, emulation zero-time and duration.At this moment, realize the switching controls of different test scenes by " dynamic scene pattern " on the handoff scenario selection key and " static scene pattern ".
When needing abundant more scene, the user selects, the user can be adjusted partial simulation device parameter, when editing more complex track, also be provided with serial line interface on the housing of the present utility model, the output terminal of this serial line interface links to each other with the FPGA signal processing module.At this moment, host computer can be connected on the serial line interface, and the scene selection key is transferred to " self-defined scene mode ".By this serial line interface this GPS simulator and host computer being communicated, can be that the GPS simulator is controlled and show that both are used and realize the satellite-signal analog functuion like this by the simulator software of establishing in the host computer.Above-mentioned simulator software can be realized mode of operation selection, simulating scenes management, simulation parameter configuration, emulated data record and test performance assessment etc., and it mainly is made up of software modules such as scene editor, Simulation Control, constellation emulation, status monitoring and external interfaces.Wherein the scene editor finishes scene creation, configuration and management, supports simulation time setting, satellite ephemeris editor, phantom error setting, user trajectory editor and parameter configuration etc.
Except being provided with the scene selection key, also include control buttons such as switch and signal attenuation knob on the housing of the present utility model.The signal attenuation knob is serially connected between up-conversion module and the gps signal delivery outlet, and promptly the input end of signal attenuation knob links to each other with the output terminal of up-conversion module, and the output terminal of signal attenuation knob links to each other with the input end of gps signal delivery outlet; Control the attenuation rate of GPS simulator output signal by conditioning signal decay knob.As in the utility model preferred embodiment, the signal simulator initialize signal of GPS simulator is-90dBm, by conditioning signal decay knob can provide thick decay (± 10dB) and smart decay (± 1dB).In order to show every setting of GPS simulator and ruuning situation more intuitively, also be provided with LCDs on the described housing, the input end of this LCDs links to each other with the FPGA signal processing module.
Signal imitation of the present utility model is based on the DSP+FPGA+D/A+RF hardware platform.Wherein DSP message processing module major function comprises: finish navigation message decoding and ephemeris parameter and extract; Calculate position, the speed of institute's analog satellite according to ephemeris parameter, and, set up satellite information in conjunction with position, speed, the temporal information of carrier.And then extrapolate essential informations such as satellite-signal propagation delay and Doppler shift; Set up various error models, mainly comprise multipath error, phantom atom clock error, ionospheric error, tropospheric error, earth rotation error etc.,, generate the parameter of revising and changing the satellite-signal state according to the Model Calculation error; According to the carrier movement trajectory parameters that host computer provides, carry out high dynamic N CO simulation; The real-time correction of the NCO simulation error of DPS and FPGA.Wherein FPGA signal processing module major function comprises: artificial intelligences such as passage control information and current analogue navigation telegraph text data and phase delay are extracted, and generate current channel state and NCO analog correction data simultaneously; The pseudo-code of navigation satellite signal and carrier generator realize, comprises that the emulation passage realizes that pseudo-code can join flexibly, and initial code phase positions and carrier phase setting; The realization of high dynamic signal sign indicating number NCO and carrier wave NCO is finished the pseudo-code of navigation message and is modulated and carrier modulation; Finish the modulation of each passage digital medium-frequency signal of simulator; Receive the power control instruction that scene data module or host computer send, realize the power control of modulation signal; Finish the initial and control register setting of D/A analog-digital chip; Finish the data communication between system, comprise the serial port drive design, the transmission that reads and writes data, reception and buffer memory.The D/A module realizes that digital medium-frequency signal is converted to simulating signal.The up-conversion module is carried out mixing, filtering to the nominal analog intermediate frequency signal of input, upconverts to the nominal radiofrequency frequency 1575.42MHz of GPS, and is consistent with the signal that the gps satellite of actual environment is launched.Last radiofrequency signal is received the gps signal delivery outlet and is launched the confession receiver test.
Claims (5)
1. one-touch easy GPS simulator comprises the mimic channel that is provided with in housing and the housing; Wherein mimic channel mainly is made up of DSP message processing module, FPGA signal processing module, D/A modular converter and up-conversion module; The DSP message processing module links to each other with the FPGA signal processing module, and the output terminal of FPGA signal processing module is connected to the up-conversion module through the D/A modular converter, and the output terminal of up-conversion module links to each other with the gps signal delivery outlet that housing is provided with; It is characterized in that: described mimic channel also comprises a contextual data module, and the control input end of this contextual data module links to each other with the scene selection key that housing is provided with, and the output terminal of contextual data module is connected to the FPGA signal processing module.
2. one-touch easy GPS simulator according to claim 1 is characterized in that: prestore dynamic scene parameter and static scene parameter in the described contextual data module.
3. one-touch easy GPS simulator according to claim 1 and 2 is characterized in that: also be provided with serial line interface on the described housing, the output terminal of this serial line interface links to each other with the FPGA signal processing module.
4. one-touch easy GPS simulator according to claim 1, it is characterized in that: also be provided with the signal attenuation knob on the described housing, this signal attenuation knob is serially connected between up-conversion module and the gps signal delivery outlet, the input end that is the signal attenuation knob links to each other with the output terminal of up-conversion module, and the output terminal of signal attenuation knob links to each other with the input end of gps signal delivery outlet.
5. one-touch easy GPS simulator according to claim 1 is characterized in that: also be provided with LCDs on the described housing, the input end of this LCDs links to each other with the FPGA signal processing module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206964313U CN201936012U (en) | 2010-12-31 | 2010-12-31 | Simple one-key global positioning system (GPS) simulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206964313U CN201936012U (en) | 2010-12-31 | 2010-12-31 | Simple one-key global positioning system (GPS) simulator |
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| CN201936012U true CN201936012U (en) | 2011-08-17 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841364A (en) * | 2012-09-06 | 2012-12-26 | 桂林电子科技大学 | GPS (global position system) velocity measurement implementation method and GPS velocity meter |
| CN102970126A (en) * | 2012-11-06 | 2013-03-13 | 郑州威科姆科技股份有限公司 | Simple analogy method and device of static timing satellite signals |
| CN103308951A (en) * | 2013-06-03 | 2013-09-18 | 中国地质大学（武汉） | Control system and operation method of transient electromagnetic signal acquisition instrument of handheld pseudo random |
| CN104459726A (en) * | 2014-11-24 | 2015-03-25 | 中国电子科技集团公司第二十研究所 | Interference signal generator |
| CN104459727A (en) * | 2014-11-24 | 2015-03-25 | 中国电子科技集团公司第二十研究所 | Satellite signal simulation generator applied to GPS communication system |
| CN105759287A (en) * | 2016-04-22 | 2016-07-13 | 上海资誉网络科技有限公司 | GPS equipment test method and apparatus thereof |
| CN108680935A (en) * | 2018-05-15 | 2018-10-19 | 北京遥测技术研究所 | A kind of portable production multisystem satellite navigation analogue system |
-
2010
- 2010-12-31 CN CN2010206964313U patent/CN201936012U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841364A (en) * | 2012-09-06 | 2012-12-26 | 桂林电子科技大学 | GPS (global position system) velocity measurement implementation method and GPS velocity meter |
| CN102970126A (en) * | 2012-11-06 | 2013-03-13 | 郑州威科姆科技股份有限公司 | Simple analogy method and device of static timing satellite signals |
| CN103308951A (en) * | 2013-06-03 | 2013-09-18 | 中国地质大学（武汉） | Control system and operation method of transient electromagnetic signal acquisition instrument of handheld pseudo random |
| CN103308951B (en) * | 2013-06-03 | 2016-01-20 | 中国地质大学（武汉） | The control system of transient electromagnetic signal acquisition instrument of handheld pseudo random |
| CN104459726A (en) * | 2014-11-24 | 2015-03-25 | 中国电子科技集团公司第二十研究所 | Interference signal generator |
| CN104459727A (en) * | 2014-11-24 | 2015-03-25 | 中国电子科技集团公司第二十研究所 | Satellite signal simulation generator applied to GPS communication system |
| CN105759287A (en) * | 2016-04-22 | 2016-07-13 | 上海资誉网络科技有限公司 | GPS equipment test method and apparatus thereof |
| CN108680935A (en) * | 2018-05-15 | 2018-10-19 | 北京遥测技术研究所 | A kind of portable production multisystem satellite navigation analogue system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20111231 |