CN109343332A - Time dissemination system based on Big Dipper satellite signal - Google Patents
Time dissemination system based on Big Dipper satellite signal Download PDFInfo
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- CN109343332A CN109343332A CN201811472339.6A CN201811472339A CN109343332A CN 109343332 A CN109343332 A CN 109343332A CN 201811472339 A CN201811472339 A CN 201811472339A CN 109343332 A CN109343332 A CN 109343332A
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- constant temperature
- crystal oscillator
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
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- Radar, Positioning & Navigation (AREA)
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Abstract
Time dissemination system disclosed by the invention based on Big Dipper satellite signal, it is related to technical field of satellite navigation, including transceiver module, computing module, control module, voltage-controlled circuit and constant temperature voltage controlled crystal oscillator, wherein, transceiver module is connect with control module, control module is connect with computing module and with the voltage-controlled circuit respectively, computing module is connect with constant temperature voltage controlled crystal oscillator, IRIG-B time signal is divided out from 1PPS timing signal and jitter value is sent to the control module, IRIG-B time signal is sent to constant temperature voltage controlled crystal oscillator, control module, it is also used to receive the jitter value of computing module transmission and according to jitter value, calculate voltage-controlled circuit required voltage, voltage-controlled circuit is connect with constant temperature voltage controlled crystal oscillator, for taming constant temperature voltage controlled crystal oscillator, realize the timing function of 1PPS IRIG-B signal , so that the new figure of satellite still has timing function less than satellite-signal searching, improve the time service performance and time service precision of existing satellite system.
Description
Technical field
The present invention relates to technical field of satellite navigation, and in particular to a kind of time dissemination system based on Big Dipper satellite signal.
Background technique
The available satellite system in China has GPS system, dipper system, GLONASS system at present.Wherein, GPS system and
GLONASS system is not national system, is had when using at crucial moment greatly restricted.Dipper system be China from
Round-the-clock, the regional navigation system of main research and development have, time service, communication three zones.Since satellite emission signal reaches reception
Short distance is remote, signal be typically subject in transmission process ephemeris error, the transmission loss of Radio Link, multipath effect,
External interference introduces the interference of the separate sources such as error code and delay jitter and different periods, can be because of the drift of 1PPS timing signal
It moves, if the phase of 1PPS timing signal cannot be accurately identified, will have a direct impact on time service performance, lead to awarding for existing satellite system
Shi Xingneng is poor.
Summary of the invention
To solve the deficiencies in the prior art, the embodiment of the invention provides a kind of time service system based on Big Dipper satellite signal
System, to improve the time service performance of existing satellite system.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
The embodiment of the invention provides a kind of time dissemination system based on Big Dipper satellite signal, which includes:
Transceiver module, computing module, control module, voltage-controlled circuit and constant temperature voltage controlled crystal oscillator, in which:
The transceiver module is connect with the control module, including primary antenna and first GNSS corresponding with the primary antenna
Receiving module, from antenna and with described from the corresponding 2nd GNSS receiving module of antenna, for receiving Big Dipper satellite signal and will
The Big Dipper satellite signal is sent to the control module；
The control module is connect with the computing module and with the voltage-controlled circuit respectively, is used for described first
The BD2 signal that the GPS signal and the 2nd GNSS receiving module that GNSS receiving module is sent are sent is merged, and 1PPS is generated
Timing signal；
The computing module is connect with the constant temperature voltage controlled crystal oscillator, when for receiving the 1PPS of the control module transmission
Mark signal simultaneously calculates the jitter value of the timing signal and carries out phase-detection to the 1PPS timing signal, when from the 1PPS
IRIG-B time signal is divided out in mark signal and the jitter value is sent to the control module, by the IRIG-B time service
Signal is sent to the constant temperature voltage controlled crystal oscillator；
The control module is also used to receive the jitter value that the computing module is sent and according to the jitter value, calculating
The voltage-controlled circuit required voltage out；
The voltage-controlled circuit is connect with the constant temperature voltage controlled crystal oscillator, for taming the constant temperature voltage controlled crystal oscillator.
Further, the computing module is CPLD.
Further, the control module is TMS320F28335.
Time dissemination system provided in an embodiment of the present invention based on Big Dipper satellite signal, including transceiver module, computing module, control
Molding block, voltage-controlled circuit and constant temperature voltage controlled crystal oscillator, wherein transceiver module is connect with control module, including primary antenna and with main day
The corresponding first GNSS receiving module of line, from antenna and with from the corresponding 2nd GNSS receiving module of antenna, for receiving Beidou
Big Dipper satellite signal is simultaneously sent to control module by satellite-signal, and control module connects with computing module and with voltage-controlled circuit respectively
It connects, the BD2 signal that the GPS signal and the 2nd GNSS receiving module for sending the first GNSS receiving module are sent carries out
Fusion generates 1PPS timing signal, and computing module is connect with constant temperature voltage controlled crystal oscillator, when for receiving the 1PPS of control module transmission
Mark signal simultaneously calculates the jitter value of timing signal and carries out phase-detection to 1PPS timing signal, divides from 1PPS timing signal
IRIG-B time signal and jitter value is sent to control module out, IRIG-B time signal is sent to constant temperature voltage controlled crystal oscillator,
Control module, be also used to receive computing module transmission jitter value and according to jitter value, calculate voltage-controlled circuit required voltage,
Voltage-controlled circuit is connect with constant temperature voltage controlled crystal oscillator, for taming constant temperature voltage controlled crystal oscillator, realizes the time service function of 1PPS IRIG-B signal
Can so that the new figure of satellite still has timing function less than satellite-signal searching, improve existing satellite system time service performance and
Time service precision.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the time dissemination system provided in an embodiment of the present invention based on Big Dipper satellite signal.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the time dissemination system report provided in an embodiment of the present invention based on Big Dipper satellite signal includes:
Transceiver module, computing module, control module, voltage-controlled circuit and constant temperature voltage controlled crystal oscillator, in which:
The transceiver module is connect with the control module, including primary antenna and first GNSS corresponding with the primary antenna
Receiving module, from antenna and with described from the corresponding 2nd GNSS receiving module of antenna, for receiving Big Dipper satellite signal and will
The Big Dipper satellite signal is sent to the control module；
The control module is connect with the computing module and with the voltage-controlled circuit respectively, is used for described first
The BD2 signal that the GPS signal and the 2nd GNSS receiving module that GNSS receiving module is sent are sent is merged, and 1PPS is generated
Timing signal；
The computing module is connect with the constant temperature voltage controlled crystal oscillator, when for receiving the 1PPS of the control module transmission
Mark signal simultaneously calculates the jitter value of the timing signal and carries out phase-detection to the 1PPS timing signal, when from the 1PPS
IRIG-B time signal is divided out in mark signal and the jitter value is sent to the control module, by the IRIG-B time service
Signal is sent to the constant temperature voltage controlled crystal oscillator；
The control module is also used to receive the jitter value that the computing module is sent and according to the jitter value, calculating
The voltage-controlled circuit required voltage out；
The voltage-controlled circuit is connect with the constant temperature voltage controlled crystal oscillator, for taming the constant temperature voltage controlled crystal oscillator.
Optionally, the computing module is CPLD, or other components with the same function.
Optionally, the control module is TMS320F28335, or other components with the same function.
Time dissemination system provided in an embodiment of the present invention based on Big Dipper satellite signal, including transceiver module, computing module, control
Molding block, voltage-controlled circuit and constant temperature voltage controlled crystal oscillator, wherein transceiver module is connect with control module, including primary antenna and with main day
The corresponding first GNSS receiving module of line, from antenna and with from the corresponding 2nd GNSS receiving module of antenna, for receiving Beidou
Big Dipper satellite signal is simultaneously sent to control module by satellite-signal, and control module connects with computing module and with voltage-controlled circuit respectively
It connects, the BD2 signal that the GPS signal and the 2nd GNSS receiving module for sending the first GNSS receiving module are sent melts
It closes, generates 1PPS timing signal, computing module is connect with constant temperature voltage controlled crystal oscillator, for receiving the 1PPS markers of control module transmission
Signal simultaneously calculates the jitter value of timing signal and carries out phase-detection to 1PPS timing signal, divides out from 1PPS timing signal
Jitter value is simultaneously sent to the control module, IRIG-B time signal is sent to the voltage-controlled crystalline substance of constant temperature by IRIG-B time signal
Vibration, control module are also used to receive the jitter value of computing module transmission and according to jitter value, calculate the electricity of voltage-controlled circuit needs
Pressure, voltage-controlled circuit are connect with constant temperature voltage controlled crystal oscillator, for taming constant temperature voltage controlled crystal oscillator, realize awarding for 1PPS IRIG-B signal
Shi Gongneng improves the time service of existing satellite system so that the new figure of satellite still has timing function less than satellite-signal searching
Energy and time service precision.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
It is understood that the correlated characteristic in the above method and device can be referred to mutually.In addition, in above-described embodiment
" first ", " second " etc. be and not represent the superiority and inferiority of each embodiment for distinguishing each embodiment.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
Algorithm and display are not inherently related to any particular computer, virtual system, or other device provided herein.
Various general-purpose systems can also be used together with teachings based herein.As described above, it constructs required by this kind of system
Structure be obvious.In addition, the present invention is also not directed to any particular programming language.It should be understood that can use various
Programming language realizes summary of the invention described herein, and the description done above to language-specific is to disclose this hair
Bright preferred forms.
In addition, memory may include the non-volatile memory in computer-readable medium, random access memory
(RAM) and/or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM), memory includes extremely
A few storage chip.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable Jie
The example of matter.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including element
There is also other identical elements in process, method, commodity or equipment.
It will be understood by those skilled in the art that embodiments herein can provide as method, system or computer program product.
Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application
Form.It is deposited moreover, the application can be used to can be used in the computer that one or more wherein includes computer usable program code
The shape for the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The above is only embodiments herein, are not intended to limit this application.To those skilled in the art,
Various changes and changes are possible in this application.It is all within the spirit and principles of the present application made by any modification, equivalent replacement,
Improve etc., it should be included within the scope of the claims of this application.
Claims (3)
1. a kind of time dissemination system based on Big Dipper satellite signal characterized by comprising transceiver module, computing module, control mould
Block, voltage-controlled circuit and constant temperature voltage controlled crystal oscillator, in which: the transceiver module is connect with the control module, including primary antenna and with
The corresponding first GNSS receiving module of the primary antenna, from antenna and with described from the corresponding 2nd GNSS receiving module of antenna,
For receiving Big Dipper satellite signal and the Big Dipper satellite signal being sent to the control module；
The control module is connect with the computing module and with the voltage-controlled circuit respectively, for meeting the first GNSS
It receives the GPS signal that module is sent and the BD2 signal that the 2nd GNSS receiving module is sent is merged, generate 1PPS markers letter
Number；
The computing module is connect with the constant temperature voltage controlled crystal oscillator, the 1PPS markers letter sent for receiving the control module
Number and calculate the timing signal jitter value and to the 1PPS timing signal carry out phase-detection, from the 1PPS markers believe
IRIG-B time signal is divided out in number and the jitter value is sent to the control module, by the IRIG-B time signal
It is sent to the constant temperature voltage controlled crystal oscillator；
The control module, is also used to receive the jitter value that the computing module is sent and according to the jitter value, calculates institute
State voltage-controlled circuit required voltage；
The voltage-controlled circuit is connect with the constant temperature voltage controlled crystal oscillator, for taming the constant temperature voltage controlled crystal oscillator.
2. the time dissemination system according to claim 1 based on Big Dipper satellite signal, which is characterized in that
The computing module is CPLD.
3. the time dissemination system according to claim 1 based on Big Dipper satellite signal, which is characterized in that
The control module is TMS320F28335.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811472339.6A CN109343332A (en) | 2018-12-04 | 2018-12-04 | Time dissemination system based on Big Dipper satellite signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811472339.6A CN109343332A (en) | 2018-12-04 | 2018-12-04 | Time dissemination system based on Big Dipper satellite signal |
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Cited By (3)
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| CN111580380A (en) * | 2020-06-12 | 2020-08-25 | 成都七维频控科技有限公司 | Method for improving GNSS synchronous time service precision |
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