CN111381259A - Method and system for enhancing Beidou navigation system by using low-earth-orbit satellite - Google Patents
Method and system for enhancing Beidou navigation system by using low-earth-orbit satellite Download PDFInfo
- Publication number
- CN111381259A CN111381259A CN202010153428.5A CN202010153428A CN111381259A CN 111381259 A CN111381259 A CN 111381259A CN 202010153428 A CN202010153428 A CN 202010153428A CN 111381259 A CN111381259 A CN 111381259A
- Authority
- CN
- China
- Prior art keywords
- orbit
- satellite
- navigation
- low
- beidou
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/27—Acquisition or tracking or demodulation of signals transmitted by the system creating, predicting or correcting ephemeris or almanac data within the receiver
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/29—Acquisition or tracking or demodulation of signals transmitted by the system carrier including Doppler, related
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention provides a method and a system for enhancing a Beidou navigation system by using a low earth orbit satellite, which comprises the following steps: step M1: on the basis of establishing a global-coverage low-orbit navigation enhanced satellite constellation, a ground station acquires an IGMAS precise orbit and clock error; step M2: injecting the IGMAS precise orbit and clock difference acquired by the ground station to a low-orbit navigation enhanced satellite; step M3: the low-orbit navigation enhancement satellite calculates the position and clock error of the low-orbit navigation enhancement satellite by using the received IGMAS precise orbit, clock error and navigation information of the Beidou satellite, and broadcasts the navigation information generated by the low-orbit navigation enhancement satellite to a ground user; step M4: the ground user receives the navigation information of the Beidou satellite and simultaneously receives the navigation information of the low-orbit navigation enhanced satellite by using the ground receiver, so that the positioning precision and the convergence speed are improved. The invention can enhance the performance of the Beidou navigation system and improve the positioning accuracy and the convergence speed of the ground receiver.
Description
Technical Field
The invention relates to the technical field of satellite navigation and positioning, in particular to a method and a system for enhancing a Beidou navigation system by using a low-earth-orbit satellite.
Background
With the rapid development of the Beidou satellite navigation system in China, the Beidou navigation system is applied to more and more fields. At present, if a ground user only depends on a Beidou satellite to carry out positioning, namely the Beidou broadcast ephemeris and the pseudo-range observed quantity of a Beidou receiver can only reach the accuracy of meter level or even worse, and the requirements of the fields such as high-accuracy mapping and automatic driving cannot be met. In order to improve the accuracy of the ground user positioning, the current common idea is to use a ground-based augmentation system network to achieve the purpose. However, this method has the problems that stations cannot be built or are difficult to build in areas such as oceans and deserts, and the like, and it is difficult to achieve coverage nationwide or globally, and also, since high-precision positioning requires the use of carrier phase observations, this involves resolving the ambiguity of the whole circumference, and the positioning convergence time is long using the ground-based augmentation method.
In summary, in the field of satellite navigation positioning, a navigation enhancement method capable of global coverage and realizing fast and high-precision positioning is urgently needed.
Patent document CN109001763A (application number: 201810566046.8) discloses a navigation enhancement method and system based on low-orbit constellation, the method includes: (a) broadcasting a navigation direct signal and navigation enhancement information by using a low earth orbit constellation satellite; (b) the user comprehensively utilizes the navigation direct-emitting signals of the navigation satellite and the low-orbit satellite and the navigation enhancement information to carry out precise positioning, speed measurement and time service. The method can enhance the geometrical configuration of the observation space of the user by means of the rapid movement characteristic of the low-orbit satellite, and shorten the initialization time of the precise positioning of the user. The user receiver has the same hardware structure as a general satellite navigation receiver, can realize rapid and precise positioning only by unidirectionally receiving direct signals of a navigation satellite and a low-orbit satellite, and does not need to consider other data communication links.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method and a system for enhancing a Beidou navigation system by using a low-earth-orbit satellite.
The invention provides a method for enhancing a Beidou navigation system by using a low earth orbit satellite, which comprises the following steps:
step M1: on the basis of establishing a global-coverage low-orbit navigation enhanced satellite constellation, a ground station acquires an IGMAS precise orbit and clock error;
step M2: injecting the IGMAS precise orbit and clock difference acquired by the ground station to a low-orbit navigation enhanced satellite;
step M3: the low-orbit navigation enhancement satellite calculates the position and clock error of the low-orbit navigation enhancement satellite by using the received IGMAS precise orbit, clock error and navigation information of the Beidou satellite, and broadcasts the navigation information generated by the low-orbit navigation enhancement satellite to a ground user;
step M4: and the ground user receives the navigation information of the Beidou satellite and simultaneously receives the navigation information of the low-orbit navigation enhanced satellite by using the ground receiver, and calculates the position of the ground user by using the navigation information of the Beidou satellite and the navigation information of the low-orbit navigation enhanced satellite.
Preferably, the step M2 includes: and injecting the IGMAS precise orbit and clock difference acquired by the ground station to the low-orbit navigation enhanced satellite according to a preset time interval.
Preferably, the predetermined time interval is up to 24 hours.
Preferably, the navigation information of the satellite-borne Beidou receiver in the step M3 includes: a pseudorange observation and a carrier phase observation.
Preferably, the navigation information generated by the low-earth navigation enhanced satellite in the step M3 includes: the position and clock error of the IGMAS precise orbit and clock error, low orbit navigation enhanced satellite and the ranging signal injected on the ground station.
The invention provides a system for enhancing a Beidou navigation system by using a low earth orbit satellite, which comprises the following steps:
module M1: on the basis of establishing a global-coverage low-orbit navigation enhanced satellite constellation, a ground station acquires an IGMAS precise orbit and clock error;
module M2: injecting the IGMAS precise orbit and clock difference acquired by the ground station to a low-orbit navigation enhanced satellite;
module M3: the low-orbit navigation enhancement satellite calculates the position and clock error of the low-orbit navigation enhancement satellite by using the received IGMAS precise orbit, clock error and navigation information of the Beidou satellite, and broadcasts the navigation information generated by the low-orbit navigation enhancement satellite to a ground user;
module M4: and the ground user receives the navigation information of the Beidou satellite and simultaneously receives the navigation information of the low-orbit navigation enhanced satellite by using the ground receiver, and calculates the position of the ground user by using the navigation information of the Beidou satellite and the navigation information of the low-orbit navigation enhanced satellite.
Preferably, said module M2 comprises: and injecting the IGMAS precise orbit and clock difference acquired by the ground station to the low-orbit navigation enhanced satellite according to a preset time interval.
Preferably, the predetermined time interval is up to 24 hours.
Preferably, the navigation information of the satellite-borne Beidou receiver in the module M3 includes: a pseudorange observation and a carrier phase observation.
Preferably, the navigation information generated by the low-earth navigation enhanced satellite in the module M3 includes: the position and clock error of the IGMAS precise orbit and clock error, low orbit navigation enhanced satellite and the ranging signal injected on the ground station.
Compared with the prior art, the invention has the following beneficial effects:
1. the use of low-orbit satellite networking can cover most of the global areas including oceans, deserts and the like, and the application range is wider;
2. because the invention uses IGMAS precision orbit, clock error product to replace the big Dipper satellite broadcast ephemeris, and the precision of the former is greatly higher than the broadcast ephemeris, therefore can improve the positioning precision of the ground user;
3. because the invention receives the navigation signal of the Beidou satellite and also receives the navigation signal generated by the low-orbit navigation enhanced satellite, compared with the Beidou satellite, the elevation angle of the low-orbit navigation enhanced satellite relative to the ground user receiver is changed more quickly, thus the performance of the Beidou navigation system can be enhanced, the ambiguity of the whole circle can be solved more quickly, the positioning convergence speed is accelerated, and the ground receiving and positioning precision is improved.
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 implementation principle of 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 method for enhancing a Beidou navigation system by using a low earth orbit satellite, which comprises the following steps:
step M1: on the basis of establishing a global-coverage low-orbit navigation enhanced satellite constellation, the ground station downloads and acquires an IGMAS precise orbit and clock error from an internet website;
step M2: injecting the IGMAS precise orbit and clock difference acquired by the ground station to a low-orbit navigation enhanced satellite;
specifically, the step M2 includes: the product types of the IGMAS precise orbit and clock error which are injected on the ground station are ultra-fast forecast orbit and clock error, and the longest time interval of every two injections is 24 hours.
Step M3: the low-orbit navigation enhancement satellite calculates the position and clock error of the low-orbit navigation enhancement satellite by using the received IGMAS precise orbit, clock error and navigation information of the Beidou satellite, and broadcasts the navigation information generated by the low-orbit navigation enhancement satellite to a ground user; when the low-orbit navigation enhanced satellite calculates the position and clock error of the low-orbit navigation enhanced satellite, the precise orbit and clock error of the IGMAS are needed, and the Beidou broadcast ephemeris is not used.
The low-orbit navigation enhanced satellite uses IGMAS precise orbit and clock error to replace a Beidou broadcast ephemeris, and then calculates the position and clock error of the low-orbit navigation enhanced satellite by combining the dynamic model of the low-orbit navigation enhanced satellite and the observed quantity of a satellite-borne Beidou receiver.
Specifically, the navigation information of the satellite-borne Beidou receiver in the step M3 includes: a pseudorange observation and a carrier phase observation.
Specifically, the navigation information generated by the low-earth navigation enhanced satellite in step M3 includes: the position and clock error of the IGMAS precise orbit and clock error, low orbit navigation enhanced satellite and the ranging signal injected on the ground station.
Step M4: the ground user receives the navigation information of the Beidou satellite and simultaneously receives the navigation information of the low-orbit navigation enhanced satellite by using the ground receiver, so that the positioning precision and the convergence speed are improved.
The time reference of all the navigation enhancement related devices on the low earth orbit navigation enhancement satellite star must be highly uniform.
The invention provides a system for enhancing a Beidou navigation system by using a low earth orbit satellite, which comprises the following steps:
module M1: on the basis of establishing a global-coverage low-orbit navigation enhanced satellite constellation, the ground station downloads and acquires an IGMAS precise orbit and clock error from an internet website;
module M2: injecting the IGMAS precise orbit and clock difference acquired by the ground station to a low-orbit navigation enhanced satellite;
specifically, the module M2 includes: the product types of the IGMAS precise orbit and clock error which are injected on the ground station are ultra-fast forecast orbit and clock error, and the longest time interval of every two injections is 24 hours.
Module M3: the low-orbit navigation enhancement satellite calculates the position and clock error of the low-orbit navigation enhancement satellite by using the received IGMAS precise orbit, clock error and navigation information of the Beidou satellite, and broadcasts the navigation information generated by the low-orbit navigation enhancement satellite to a ground user; when the low-orbit navigation enhanced satellite calculates the position and clock error of the low-orbit navigation enhanced satellite, the precise orbit and clock error of the IGMAS are needed, and the Beidou broadcast ephemeris is not used.
The low-orbit navigation enhanced satellite uses IGMAS precise orbit and clock error to replace a Beidou broadcast ephemeris, and then calculates the position and clock error of the low-orbit navigation enhanced satellite by combining the dynamic model of the low-orbit navigation enhanced satellite and the observed quantity of a satellite-borne Beidou receiver.
Specifically, the navigation information of the satellite-borne Beidou receiver in the module M3 includes: a pseudorange observation and a carrier phase observation.
Specifically, the navigation information generated by the low-earth navigation enhanced satellite in the module M3 includes: the position and clock error of the IGMAS precise orbit and clock error, low orbit navigation enhanced satellite and the ranging signal injected on the ground station.
Module M4: the ground user receives the navigation information of the Beidou satellite and simultaneously receives the navigation information of the low-orbit navigation enhanced satellite by using the ground receiver, so that the positioning precision and the convergence speed are improved.
The time reference of all the navigation enhancement related devices on the low earth orbit navigation enhancement satellite star must be highly uniform.
The present invention is further described in detail by the following preferred examples:
fig. 1 shows the basic constitution and principle of the present invention in this embodiment. As shown in fig. 1, to implement the method for enhancing the beidou navigation system by using the low earth orbit satellite according to the present invention, the system comprises: the system comprises an IGMAS data center, an above-ground injection station, a Beidou satellite, a low-orbit navigation enhancement satellite and a ground user. The specific implementation steps are as follows:
the method comprises the following steps: the ground upper injection station acquires the latest IGMAS ultrafast forecast orbit and clock error products from an IGMAS data center at regular intervals (the longest 24 hours), and injects the latest IGMAS ultrafast forecast orbit and clock error products to a low-orbit navigation enhanced satellite through an uplink channel;
step two: the low-orbit navigation enhancement satellite calculates the position and clock error of the low-orbit navigation enhancement satellite in real time on the satellite by using an IGMAS (advanced geospatial System) ultrafast forecast ephemeris and clock error injected on the ground, observation data of a satellite-borne Beidou receiver and a dynamic model of the low-orbit navigation enhancement satellite;
step three: the low earth orbit navigation satellite broadcasts the navigation signal generated by the low earth orbit navigation satellite to the ground user, comprising the following steps: the position and clock error of an IGMAS precise orbit and clock error, low orbit navigation enhancement satellite and a ranging signal injected on the ground;
step four: when the ground user uses the Beidou receiver to resolve the position of the ground user, the navigation signal of the Beidou satellite is received, and meanwhile, the navigation signal broadcast by the low-orbit navigation enhanced satellite is also received.
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 (10)
1. A method for enhancing a Beidou navigation system by using a low earth orbit satellite is characterized by comprising the following steps:
step M1: on the basis of establishing a global-coverage low-orbit navigation enhanced satellite constellation, a ground station acquires an IGMAS precise orbit and clock error;
step M2: injecting the IGMAS precise orbit and clock difference acquired by the ground station to a low-orbit navigation enhanced satellite;
step M3: the low-orbit navigation enhancement satellite calculates the position and clock error of the low-orbit navigation enhancement satellite by using the received IGMAS precise orbit, clock error and navigation information of the Beidou satellite, and broadcasts the navigation information generated by the low-orbit navigation enhancement satellite to a ground user;
step M4: and the ground user receives the navigation information of the Beidou satellite and simultaneously receives the navigation information of the low-orbit navigation enhanced satellite by using the ground receiver, and calculates the position of the ground user by using the navigation information of the Beidou satellite and the navigation information of the low-orbit navigation enhanced satellite.
2. The method for enhancing the beidou navigation system by using the low earth orbit satellite according to claim 1, wherein the step M2 includes: and injecting the IGMAS precise orbit and clock difference acquired by the ground station to the low-orbit navigation enhanced satellite according to a preset time interval.
3. The method of claim 2, wherein the predetermined time interval is up to 24 hours.
4. The method of claim 1, wherein the navigation information of the satellite-borne Beidou receiver in the step M3 comprises: a pseudorange observation and a carrier phase observation.
5. The method of claim 1, wherein the navigation information generated by the low-earth-orbit navigation enhancement satellite in the step M3 includes: the position and clock error of the IGMAS precise orbit and clock error, low orbit navigation enhanced satellite and the ranging signal injected on the ground station.
6. A system for enhancing a Beidou navigation system by using low earth orbit satellites is characterized by comprising:
module M1: on the basis of establishing a global-coverage low-orbit navigation enhanced satellite constellation, a ground station acquires an IGMAS precise orbit and clock error;
module M2: injecting the IGMAS precise orbit and clock difference acquired by the ground station to a low-orbit navigation enhanced satellite;
module M3: the low-orbit navigation enhancement satellite calculates the position and clock error of the low-orbit navigation enhancement satellite by using the received IGMAS precise orbit, clock error and navigation information of the Beidou satellite, and broadcasts the navigation information generated by the low-orbit navigation enhancement satellite to a ground user;
module M4: and the ground user receives the navigation information of the Beidou satellite and simultaneously receives the navigation information of the low-orbit navigation enhanced satellite by using the ground receiver, and calculates the position of the ground user by using the navigation information of the Beidou satellite and the navigation information of the low-orbit navigation enhanced satellite.
7. The system for enhancing the beidou navigation system by using the low earth orbit satellite of claim 6, wherein the module M2 comprises: and injecting the IGMAS precise orbit and clock difference acquired by the ground station to the low-orbit navigation enhanced satellite according to a preset time interval.
8. The system of claim 7, wherein the predetermined time interval is up to 24 hours.
9. The system of claim 6, wherein the navigation information of the Beidou receiver onboard the module M3 comprises: a pseudorange observation and a carrier phase observation.
10. The system for enhancing the beidou navigation system by using the low earth orbit satellite according to claim 6, wherein the navigation information generated by the low earth orbit navigation enhancing satellite in the module M3 includes: the position and clock error of the IGMAS precise orbit and clock error, low orbit navigation enhanced satellite and the ranging signal injected on the ground station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010153428.5A CN111381259A (en) | 2020-03-06 | 2020-03-06 | Method and system for enhancing Beidou navigation system by using low-earth-orbit satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010153428.5A CN111381259A (en) | 2020-03-06 | 2020-03-06 | Method and system for enhancing Beidou navigation system by using low-earth-orbit satellite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111381259A true CN111381259A (en) | 2020-07-07 |
Family
ID=71217198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010153428.5A Pending CN111381259A (en) | 2020-03-06 | 2020-03-06 | Method and system for enhancing Beidou navigation system by using low-earth-orbit satellite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111381259A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491461A (en) * | 2020-11-24 | 2021-03-12 | 重庆两江卫星移动通信有限公司 | CORS network data transmission system and method for low earth orbit satellite communication |
| CN112764067A (en) * | 2020-12-23 | 2021-05-07 | 深圳创维数字技术有限公司 | Method and device for acquiring ephemeris data of GPS (Global positioning System) satellite, and vehicle-mounted and readable storage medium |
| CN112817022A (en) * | 2020-12-23 | 2021-05-18 | 浙江吉利控股集团有限公司 | Low-orbit satellite time-frequency synchronization method, system, electronic equipment and storage medium |
| CN112946699A (en) * | 2021-01-29 | 2021-06-11 | 重庆两江卫星移动通信有限公司 | Method and system for enhancing GNSS navigation system by using general-purpose low-orbit satellite |
| CN113466902A (en) * | 2021-07-07 | 2021-10-01 | 湖南跨线桥航天科技有限公司 | System architecture of low-orbit navigation enhancement system |
| CN114286286A (en) * | 2021-12-20 | 2022-04-05 | 浙江时空道宇科技有限公司 | Time synchronization method, apparatus, medium, and program product |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7042392B2 (en) * | 2003-05-30 | 2006-05-09 | The Boeing Company | GPS access system and method |
| CN108415050A (en) * | 2018-06-04 | 2018-08-17 | 北京未来导航科技有限公司 | A kind of PPP-RTK localization methods enhancing system based on low rail constellation navigation |
| CN108761504A (en) * | 2018-04-04 | 2018-11-06 | 南京航空航天大学 | Low rail navigation enhancing satellite system |
| CN109001763A (en) * | 2018-06-04 | 2018-12-14 | 北京未来导航科技有限公司 | A kind of navigation Enhancement Method and system based on low rail constellation |
| CN109061677A (en) * | 2018-06-28 | 2018-12-21 | 上海卫星工程研究所 | The method for carrying out satellite-based navigation enhancing using low orbit satellite |
-
2020
- 2020-03-06 CN CN202010153428.5A patent/CN111381259A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7042392B2 (en) * | 2003-05-30 | 2006-05-09 | The Boeing Company | GPS access system and method |
| CN108761504A (en) * | 2018-04-04 | 2018-11-06 | 南京航空航天大学 | Low rail navigation enhancing satellite system |
| CN108415050A (en) * | 2018-06-04 | 2018-08-17 | 北京未来导航科技有限公司 | A kind of PPP-RTK localization methods enhancing system based on low rail constellation navigation |
| CN109001763A (en) * | 2018-06-04 | 2018-12-14 | 北京未来导航科技有限公司 | A kind of navigation Enhancement Method and system based on low rail constellation |
| CN109061677A (en) * | 2018-06-28 | 2018-12-21 | 上海卫星工程研究所 | The method for carrying out satellite-based navigation enhancing using low orbit satellite |
Non-Patent Citations (3)
| Title |
|---|
| 刘帅等: "GNSS星载原子钟性能评估", 《武汉大学学报 信息科学版》 * |
| 张清华 北京测绘出版社: "《GNSS监测评估理论与方法》", 31 January 2017 * |
| 梁尔涛等: "基于低轨卫星增强的非差高精度导航定位技术与在轨试验验证", 《上海航天》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491461A (en) * | 2020-11-24 | 2021-03-12 | 重庆两江卫星移动通信有限公司 | CORS network data transmission system and method for low earth orbit satellite communication |
| CN112764067A (en) * | 2020-12-23 | 2021-05-07 | 深圳创维数字技术有限公司 | Method and device for acquiring ephemeris data of GPS (Global positioning System) satellite, and vehicle-mounted and readable storage medium |
| CN112817022A (en) * | 2020-12-23 | 2021-05-18 | 浙江吉利控股集团有限公司 | Low-orbit satellite time-frequency synchronization method, system, electronic equipment and storage medium |
| CN112764067B (en) * | 2020-12-23 | 2023-07-07 | 深圳创维数字技术有限公司 | GPS satellite ephemeris data acquisition method and device, vehicle-mounted and readable storage medium |
| CN112946699A (en) * | 2021-01-29 | 2021-06-11 | 重庆两江卫星移动通信有限公司 | Method and system for enhancing GNSS navigation system by using general-purpose low-orbit satellite |
| CN113466902A (en) * | 2021-07-07 | 2021-10-01 | 湖南跨线桥航天科技有限公司 | System architecture of low-orbit navigation enhancement system |
| CN114286286A (en) * | 2021-12-20 | 2022-04-05 | 浙江时空道宇科技有限公司 | Time synchronization method, apparatus, medium, and program product |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111381259A (en) | Method and system for enhancing Beidou navigation system by using low-earth-orbit satellite | |
| CN109061677B (en) | Method for satellite-based navigation enhancement by using low-earth orbit satellite | |
| CN110187364B (en) | Low-rail navigation enhanced precision correction data generation and uploading system and method | |
| EP2673658B1 (en) | Method and system for determining clock corrections | |
| Ge et al. | What is Achievable with Current COMPASS Constellations? | |
| US20230258817A1 (en) | Antenna phase center compensation for orbital assistance data | |
| Principe et al. | Software‐Defined Radio Technologies for GNSS Receivers: A Tutorial Approach to a Simple Design and Implementation | |
| CN111856534B (en) | Dual-mode GNSS carrier precise single-point positioning method and system of intelligent terminal | |
| CN102540228A (en) | High precision single point positioning system of single frequency global positioning system (GPS) and method | |
| Angrisano et al. | Performance assessment of aided global navigation satellite system for land navigation | |
| Tang et al. | Orbit determination, clock estimation and performance evaluation of BDS-3 PPP-B2b service | |
| CN111427004A (en) | Coordinate conversion method suitable for pointing of ground survey station antenna to satellite | |
| Prol et al. | Simulations of Dedicated LEO-PNT Systems for Precise Point Positioning: Methodology, Parameter Analysis, and Accuracy Evaluation | |
| Prol et al. | Simulations using LEO-PNT systems: A brief survey | |
| JP6193290B2 (en) | Positioning system and positioning method | |
| Lichten | Towards GPS orbit accuracy of tens of centimeters | |
| Chen et al. | A new approach for satellite based GNSS augmentation system: from sub-meter to better than 0.2 meter era | |
| Zin et al. | Preparing an autonomous, low-cost GNSS positioning and timing function on board a GEO telecom mission: A study case | |
| Li et al. | Analysis of static and dynamic real-time precise point positioning and precision based on SSR correction | |
| Tsai et al. | Hardware-in-the-loop Validation of GPS/GNSS Based Mission Planning for LEO Satellites | |
| Brown et al. | PNT as a Service (PNTaaS): Providing a Resilient Back-Up to GPS by Leveraging Broadband Satellite Constellations and Ground Infrastructure | |
| Palmerini | GNSS software receiver as navigation sensor in very high orbits | |
| Klopotek | Observations of artificial radio sources within the framework of geodetic very long baseline interferometry | |
| Larosa et al. | Design and verification of search and tracking modules for a FPGA-based GPS receiver | |
| Choi et al. | Development of the kinematic Global Positioning System Precise Point Positioning method using 3-pass filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200707 |