CN110365450B - Satellite-borne high-speed adjustable-rate data transmission interface and transmission method - Google Patents
Satellite-borne high-speed adjustable-rate data transmission interface and transmission method Download PDFInfo
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- CN110365450B CN110365450B CN201910749966.8A CN201910749966A CN110365450B CN 110365450 B CN110365450 B CN 110365450B CN 201910749966 A CN201910749966 A CN 201910749966A CN 110365450 B CN110365450 B CN 110365450B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
Abstract
The invention provides a satellite-borne high-speed adjustable-rate data transmission interface which comprises a high-speed data sending end and a high-speed data receiving end, wherein the high-speed data sending end transmits data to the high-speed data receiving end through three types of data interface signals, and the three types of data interface signals are a gating signal, a clock signal and a data signal; the gate control signal is a signal for controlling the on-off of the data signal, the clock signal is a signal for controlling the speed of data transmission, and the data signal is the transmitted effective information data. The invention adopts three interface signals of clock, data, gate control and the like, realizes the adjustable rate transmission of high-speed data between all satellite-borne systems by adjusting the duty ratio of the gate control signal and the data bit width, and solves the problem of the self-adaptive matching transmission of the high-speed adjustable data between different satellite-borne systems, wherein the data rate adjustment range is between 0 and 16 times of the clock frequency.
Description
Technical Field
The invention relates to the technical field of satellite-borne data transmission, in particular to a satellite-borne high-speed adjustable-rate data transmission interface and a transmission method.
Background
In the working process of each system of the satellite load, the formed data rate is not determined according to the working mode of the load and is changed within a certain range. In order to adapt to the characteristic that the data rate changes due to the load, a data transmission interface with variable rate in a certain range needs to be designed, so that the data rate can be transmitted and processed reliably in a self-adaptive manner.
Through the search of the prior art, the invention patent with application publication number CN 105099504 a is a satellite-borne high-speed data network system based on pulse ultra wide band, which includes: a satellite-borne data subsystem, a payload subsystem, and a satellite data bus; the satellite-borne data subsystem is connected to the satellite data bus; the payload subsystem comprises a payload manager and a payload, wherein the payload manager is also connected with the satellite data bus; the payload manager and the payload carry out data transmission through a wireless network; the payload manager controls and manages the payload for scientific experiments and space detection on the satellite under the command of the satellite-borne data subsystem, and is responsible for data acquisition, processing, storage, comprehensive transmission and data management of the payload; the communication modes that can be employed for communication between the payload manager and the payload via the wireless network include: WBC-to-WRT mode, broadcast mode, WRT-to-WBC mode, and WRT-to-WRT mode. The satellite-borne high-speed data network system cannot realize the adjustable-rate transmission of high-speed data among satellite-borne systems, so that the problem of high-speed data matching transmission among different satellite-borne systems cannot be solved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a satellite-borne high-speed adjustable-rate data transmission interface and a transmission method.
The invention provides a satellite-borne high-speed adjustable-rate data transmission system which comprises a high-speed data sending end and a high-speed data receiving end, wherein the high-speed data sending end transmits data to the high-speed data receiving end through three types of data interface signals, and the three types of data interface signals are a gating signal, a clock signal and a data signal; the gate control signal is a signal for controlling the on-off of the data signal, the clock signal is a signal for controlling the speed of data transmission, and the data signal is the transmitted effective information data.
Furthermore, the high-speed data sending end comprises a gating signal control module, a clock signal generation module and a data signal output module, the high-speed data receiving end comprises a gating signal receiving module, a clock signal receiving module and a data signal receiving module, and the high-speed data sending end and the high-speed data receiving end are connected through a transmission cable according to the corresponding relation of the gating signal receiving module, the clock signal receiving module and the data signal receiving module.
Furthermore, the gate control signal is an enable signal for data reception of the high-speed data transmitting end and the high-speed data receiving end, and represents that data output exists at a low level and does not exist at a high level; and the transmission of high-speed adjustable data among all satellite-borne systems is realized by adjusting the numerical value of the low level/the high level.
Further, the high-speed data sending end determines the level of the gating signal according to whether the data is valid or not, and the high-speed data sending end is in a high level state when being started.
Furthermore, after the high-speed data sending end forms high-speed data, the high-speed data is transmitted through the data signal interface, and the number of bits of the high-speed data signal can be expanded in parallel according to the transmission rate requirement.
Furthermore, the clock signal is output by the high-speed data sending end, the frequency of the clock signal is fixed, the clock signal is continuous, the frequency of the clock signal is selected according to the highest rate and the parallel expansion bits of the data to be sent by the high-speed data sending end, and the precision and stability indexes of the clock meet the requirement of high-speed data transmission.
Furthermore, the gating signal, the clock signal and the data signal are strictly aligned at the high-speed data transmitting end, so that the high-speed data receiving end can receive the signals correctly.
Furthermore, the synchronization precision of the gating signal, the clock signal and the data signal at a high-speed data transmitting end is not more than 10% of the clock cycle, and at a high-speed data receiving end, the gating signal, the clock signal and the data signal have the receiving capacity that the synchronization precision is not more than 15% of the clock cycle.
The invention also provides a satellite-borne high-speed adjustable rate data transmission method, which adopts the satellite-borne high-speed adjustable rate data transmission interface and comprises the following steps:
s1, determining the data transmission rate range needed by the high-speed data transmitting end and the high-speed data receiving end;
s2, preliminarily selecting and determining the parallel digits of the high-speed data signal according to the upper limit of the range of the data transmission rate required by the high-speed data transmitting end and the high-speed data receiving end; the data transmission with high speed and adjustable rate is realized by setting different data parallel digits;
s3, preliminarily selecting and determining the parallel digits of the high-speed data signals according to the high-speed data sending end and the high-speed data receiving end, determining the frequency of the clock signals, and appropriately reserving engineering allowance; the high-speed adjustable-rate data transmission is realized by selecting different clock signal frequencies;
s4, selecting a gating signal, wherein when the data sending end generates data or the data is accumulated to a specified amount, the gating signal is effective, and the data starts to be transmitted; otherwise, data transmission is not carried out; the gating signal is an enabling signal for receiving data by a high-speed data sending end and a high-speed data receiving end, data output is represented at low level, and no data output is represented at high level; and the satellite-borne data transmission with high speed and adjustable rate is realized by adjusting the numerical value of the low level/the high level.
Further, the steps S2 and S3 may be reversed.
Compared with the prior art, the invention has the following beneficial effects:
1. the satellite-borne high-speed adjustable-rate data transmission interface adopts three types of data interface signals such as clock, data, gating and the like, has fixed interface forms, and is convenient for unified and standard design of various systems and various single machines;
2. the satellite-borne high-speed adjustable-rate data transmission interface realizes adjustable-rate transmission of high-speed data between satellite-borne systems in a mode of adjusting the bit width of a data signal, and solves the problem of high-speed data matched transmission between different satellite-borne systems, wherein the data rate adjustment range is 0-16 times (a low-rate clock can be continuously expanded) clock frequency.
3. The satellite-borne high-speed adjustable-rate data transmission interface realizes adjustable-rate transmission of high-speed data between satellite-borne systems in a mode of adjusting the duty ratio of the gating signal, the data rate is adjusted within a range of not being transmitted to the highest transmission data, and the problem of high-speed data matched transmission between different satellite-borne systems is solved. Meanwhile, data transmission is carried out by adjusting a gating signal method, and the method can be used as a solution for time division multiplexing of data transmission among multiple systems.
4. The invention relates to a satellite-borne high-speed adjustable-rate data transmission interface which adopts three types of data interface signals such as clock, data, gating and the like, realizes the adjustable-rate transmission of high-speed data among satellite-borne systems by adjusting the duty ratio of the gating signal and the data bit width, and solves the problem of the matched transmission of the high-speed data among different satellite-borne systems within the data rate adjusting range of 0-16 CLK.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of the signal types of data interfaces in the spaceborne high-speed adjustable-rate data transmission system according to the present invention;
FIG. 2 is a timing diagram of data interface signals in the spaceborne high-speed adjustable-rate data transmission system according to the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a satellite-borne high-speed adjustable-rate data transmission system. The invention adopts three interface signals of clock, data, gating and the like, realizes the adjustable rate transmission of high-speed data between all satellite-borne systems by adjusting the duty ratio of the gating signal and the data bit width, and solves the problem of the matched transmission of the high-speed data between different satellite-borne systems within the data rate adjusting range of 0-16 CLK.
The invention is described in the following in most further detail.
As shown in fig. 1 and fig. 2, to explain the transmission scheme in detail, Flag is defined as a gating signal, a contract signal for receiving and sending signals at two ends is valid, T0 is the time from system startup to data stable output, T1 is low level data valid, and T2 is high level data invalid; defining CLK as a clock signal; defining Data as a Data signal; the LVDS interface is defined as a low voltage differential transmission signal.
Examples
The invention provides a satellite-borne high-speed adjustable-rate data transmission interface which comprises a high-speed data sending end and a high-speed data receiving end, wherein the high-speed data sending end transmits data to the high-speed data receiving end through three types of data interface signals, and the three types of data interface signals are a gating signal, a clock signal and a data signal; the gate control signal is a signal for controlling the on-off of the data signal, the clock signal is a signal for controlling the speed of data transmission, and the data signal is the transmitted effective information data.
The high-speed data transmitting end comprises a gating signal control module, a clock signal generating module and a data signal output module, the high-speed data receiving end comprises a gating signal receiving module, a clock signal receiving module and a data signal receiving module, and the high-speed data transmitting end and the high-speed data receiving end are connected through a transmission cable according to the corresponding relation of the three modules.
In this embodiment, the LVDS interface is adopted, the real-time data transmission rate can be adjusted between 0 and 1600Mbps, the data interface adopts a three-wire system, and the three types of data interface signals are a gate control signal, a clock signal and a data signal.
The high-speed data sending end determines the level of the gating signal according to whether the data is valid or not, and the high-speed data sending end is in a high level state when being started. Generally, T0 is more than 10us, T1 represents data output when the level is low, and T2 represents no data output when the level is high; the transmission of high-speed adjustable data among satellite-borne systems is realized by adjusting the numerical value of T1/T2, T1 can be effective in low level for a long time, and data are continuously transmitted at the moment; t2 may be active high for a long period of time when there is no data transfer between systems.
After the high-speed data sending end forms high-speed data, the high-speed data is transmitted through a data signal interface, and the data rate can be changed; the number of bits of the Data signal is designed to be 16 bits for parallel transmission according to the transmission rate requirement.
The clock signal is output by the high-speed data sending end, the frequency of the clock signal is fixed, the design of the embodiment is 100MHz, the clock signal is continuous, the duty ratio of the clock is 45% -55%, and the size of the clock signal can be expanded according to the type of the transmission signal; the frequency of the clock signal is selected according to the highest rate of the data to be sent at the output end and the parallel extension digit, and the precision and stability indexes of the clock meet the requirement of high-speed data transmission.
The gating signal Flag, the clock signal CLK and the Data signal Data are strictly aligned at the high-speed Data transmitting end, so that the high-speed Data receiving end can receive the Data correctly. The synchronization precision of the gating signal Flag, the clock signal CLK and the Data signal Data at the high-speed Data transmitting end is not more than 10% of the clock period, and the synchronization precision of the gating signal Flag, the clock signal CLK and the Data signal Data at the high-speed Data receiving end is not more than 15% of the clock period.
The invention also provides a satellite-borne high-speed adjustable rate data transmission method, which adopts the satellite-borne high-speed adjustable rate data transmission interface and comprises the following steps:
s1, determining the data transmission rate range needed by the high-speed data transmitting end and the high-speed data receiving end;
s2, preliminarily selecting and determining the parallel digits of the high-speed data signal according to the upper limit of the range of the data transmission rate required by the high-speed data transmitting end and the high-speed data receiving end; the data transmission with high speed and adjustable rate is realized by setting different data parallel digits;
s3, preliminarily selecting and determining the parallel digits of the high-speed data signals according to the high-speed data sending end and the high-speed data receiving end, determining the frequency of the clock signals, and appropriately reserving engineering allowance; the high-speed adjustable-rate data transmission is realized by selecting different clock signal frequencies;
s4, selecting a gating signal, wherein when the data sending end generates data or the data is accumulated to a specified amount, the gating signal is effective, and the data starts to be transmitted; otherwise, data transmission is not carried out; the gating signal is an enabling signal for receiving data by a high-speed data sending end and a high-speed data receiving end, data output is represented at low level, and no data output is represented at high level; and the satellite-borne data transmission with high speed and adjustable rate is realized by adjusting the numerical value of the low level/the high level.
Wherein, the steps S2 and S3 can be switched in sequence.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
Those skilled in the art will appreciate that, in addition to implementing the systems, apparatus, and various modules thereof provided by the present invention in purely computer readable program code, the same procedures can be implemented entirely by logically programming method steps such that the systems, apparatus, and various modules thereof are provided in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system, the device and the modules thereof provided by the present invention can be considered as a hardware component, and the modules included in the system, the device and the modules thereof for implementing various programs can also be considered as structures in the hardware component; modules for performing various functions may also be considered to be both software programs for performing the methods and structures within hardware components.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. A transmission method of satellite-borne high-speed adjustable rate data is characterized in that an adopted satellite-borne high-speed adjustable rate data interface comprises a high-speed data sending end and a high-speed data receiving end, wherein the high-speed data sending end transmits data to the high-speed data receiving end through three types of data interface signals, and the three types of data interface signals are a gating signal, a clock signal and a data signal;
the gate control signal is a signal for controlling the on-off of a data signal, the clock signal is a signal for controlling the speed of data transmission, and the data signal is transmitted effective information data;
the transmission method comprises the following steps:
s1, determining the data transmission rate range needed by the high-speed data transmitting end and the high-speed data receiving end;
s2, preliminarily selecting and determining the parallel digits of the high-speed data signal according to the upper limit of the range of the data transmission rate required by the high-speed data transmitting end and the high-speed data receiving end; the data transmission with high speed and adjustable rate is realized by setting different data parallel digits;
s3, preliminarily selecting and determining the parallel digits of the high-speed data signals according to the high-speed data sending end and the high-speed data receiving end, and determining the frequency of the clock signals; the high-speed adjustable-rate data transmission is realized by selecting different clock signal frequencies;
s4, selecting a gating signal, wherein when the data sending end generates data or the data is accumulated to a specified amount, the gating signal is effective, and the data starts to be transmitted; otherwise, data transmission is not carried out; the gating signal is an enabling signal for receiving data by a high-speed data sending end and a high-speed data receiving end, data output is represented at low level, and no data output is represented at high level; and the satellite-borne data transmission with high speed and adjustable rate is realized by adjusting the numerical value of the low level/the high level.
2. The method for transmitting spaceborne high-speed adjustable-rate data according to claim 1, wherein the high-speed data transmitting end comprises a gating signal control module, a clock signal generating module and a data signal output module, the high-speed data receiving end comprises a gating signal receiving module, a clock signal receiving module and a data signal receiving module, and the high-speed data transmitting end and the high-speed data receiving end are connected according to the corresponding relation of the three modules through a transmission cable.
3. The method for transmitting spaceborne high-speed adjustable-rate data according to claim 1, wherein the gating signal is an enabling signal for data receiving of a high-speed data transmitting end and a high-speed data receiving end, and data output is represented at low level and no data output is represented at high level; and the transmission of high-speed adjustable data among all satellite-borne systems is realized by adjusting the numerical value of the low level/the high level.
4. The method for transmitting spaceborne high-speed adjustable-rate data according to claim 3, wherein the high-speed data transmitting end determines the level of the gating signal according to whether the data is valid or not, and the high-speed data transmitting end is in a high level state when being started.
5. The method for transmitting spaceborne high-speed adjustable-rate data according to claim 1, wherein after the high-speed data is formed by the high-speed data sending end, the high-speed data is transmitted through the data signal interface, and the number of bits of the high-speed data signal can be expanded in parallel according to the transmission rate requirement.
6. The method for transmitting satellite-borne high-speed adjustable-rate data according to claim 1, wherein the clock signal is output by a high-speed data transmitting end, the frequency of the clock signal is fixed, the clock signal is continuous, the frequency of the clock signal is selected according to the highest rate and the parallel extension bits of the data to be transmitted by the high-speed data transmitting end, and the precision and stability indexes of the clock meet the requirement of high-speed data transmission.
7. The method for transmitting spaceborne high-speed adjustable-rate data according to claim 1, wherein the gating signal, the clock signal and the data signal are strictly aligned at a high-speed data transmitting end so as to be conveniently and correctly received by a high-speed data receiving end.
8. The method for transmitting satellite-borne high-speed adjustable-rate data according to claim 1, wherein the synchronization precision of the gating signal, the clock signal and the data signal at the high-speed data transmitting end is not more than 10% of the clock cycle, and at the high-speed data receiving end, the gating signal, the clock signal and the data signal have the receiving capacity that the synchronization precision is not more than 15% of the clock cycle.
9. The method for transmitting spaceborne high-speed adjustable-rate data according to claim 1, wherein the steps S2 and S3 can be reversed.
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| CN112564769B (en) * | 2020-11-30 | 2022-08-26 | 东方红卫星移动通信有限公司 | Low-orbit satellite high-speed communication method, transmitting terminal and system with multi-rate hierarchical adjustment |
| CN114286207B (en) * | 2021-11-29 | 2023-05-23 | 北京极光星通科技有限公司 | Communication architecture and method suitable for satellite-borne laser communication terminal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075278A (en) * | 2010-12-22 | 2011-05-25 | 桂林电子科技大学 | Multi-path adaptive extensive-rate code rate justification device and method |
| CN102237943A (en) * | 2010-04-26 | 2011-11-09 | 中兴通讯股份有限公司 | Method and device for processing optical transmission frame overhead |
| CN104360970A (en) * | 2014-10-11 | 2015-02-18 | 中国船舶重工集团公司第七二四研究所 | Self-adaptive transmission technology for serial bus protocol |
| CN104980126A (en) * | 2014-04-01 | 2015-10-14 | 中兴通讯股份有限公司 | Clock duty ratio adjusting circuit and multiphase clock generator |
| CN106772462A (en) * | 2016-11-22 | 2017-05-31 | 上海卫星工程研究所 | Real-time controllable formula satellite telemetry signal source |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5359179B2 (en) * | 2008-10-17 | 2013-12-04 | 富士通株式会社 | Optical receiver and optical receiving method |
| KR20110034729A (en) * | 2009-09-29 | 2011-04-06 | 삼성전자주식회사 | Method of power management in an apparatus including a processor |
-
2019
- 2019-08-14 CN CN201910749966.8A patent/CN110365450B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237943A (en) * | 2010-04-26 | 2011-11-09 | 中兴通讯股份有限公司 | Method and device for processing optical transmission frame overhead |
| CN102075278A (en) * | 2010-12-22 | 2011-05-25 | 桂林电子科技大学 | Multi-path adaptive extensive-rate code rate justification device and method |
| CN104980126A (en) * | 2014-04-01 | 2015-10-14 | 中兴通讯股份有限公司 | Clock duty ratio adjusting circuit and multiphase clock generator |
| CN104360970A (en) * | 2014-10-11 | 2015-02-18 | 中国船舶重工集团公司第七二四研究所 | Self-adaptive transmission technology for serial bus protocol |
| CN106772462A (en) * | 2016-11-22 | 2017-05-31 | 上海卫星工程研究所 | Real-time controllable formula satellite telemetry signal source |
Non-Patent Citations (1)
| Title |
|---|
| 卫星高速率信号并行解调技术研究;王波;《中国优秀硕士学位论文全文数据库》;20120228;全文 * |
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