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What is "Chinese Precision"
Source:Industry peers | Author:Marten Hong | Publish time: 2017-12-26 | 1490 Views | Share:
In the field of satellite navigation applications, higher accuracy means better application effect and user experience, and the "Chinese Precision" should only be limited by imagination. "Chinese precision" is a global star-based high-precision enhancement service system released in June 2015.

      In the field of satellite navigation applications, higher accuracy means better application effect and user experience, and the "Chinese Precision" should only be limited by imagination. "Chinese Precision" is a global star-based high-precision enhancement service system released in June 2015. Can enable our Beidou users to enjoy convenient sub - meters, sub - meters and centimeter-level enhancement services at any location in the world without the need to set up a base station. China precision broadcasts differential data to the world through L - band geostationary orbit communication satellites, so that more areas beyond the coverage of ground-based enhanced network signals, such as the sea, desert, mountain areas and so on, can also achieve high-precision positioning services.


 

Composition and principle of differential system for Chinese Precision satellite station:
The whole system of Chinese Precision consists of five parts:
1. Reference station;
2. Data processing center;
3. Injection station;
4. Geostationary satellite (INMARSAT);
5. User station.
      The reference station is compose of more than 200 reference base stations distribute around that world, receiving signals from GNSS satellites at all time, sending data obtained by the reference station to a data processing center, generating differential correction data or differential correction models after processing, and transmitting the differential correction data to a satellite injection station through a data communication link and uploading the differential correction data to an INMARSAT synchronous satellite for global release.
      The GNSS receiver of the subscriber station actually has two receiving parts at the same time, one is a GNSS receiver, one is an L - band communication receiver, which tracks all visible satellites and then obtains measurements of the GNSS satellites, while the receiver of the L - band receives correction data through the satellites of the L - band. When these correction data are applied to GNSS measurements, a real-time high-precision point result is presented.

Significance of Chinese Precision:
"Chinese Precision" new experience of centimeter - level high precision positioning service
1. China's first global satellite-based augmentation system.
2. Provide sub - meters, sub - meters, centimeter level relative accuracy of three levels of service.
3. It solves the dependence on 3g, 4g public network and radio data link, broadcasts directly from satellite l band, and can realize high-precision positioning service in unmanned area, ocean, desert, mountain area and other areas.
4. In most provinces and regions have established CORS network, the Chinese Precision signal can help realize the " star - based navigation function", the GNSS receiver receiving CORS differential signal, even in the case of CORS differential signal disconnect can maintain 30 - 40 minutes of high precision measurement.
5. The monopoly price of foreign system in China has been challenged.
6.The emergency mapping, is a very good means.
7. By the Chinese completely control, more security.

G10A satellite station differential RTK
China Precision difference, single machine 5 - 12 cm positioning accuracy;
Support for star chain continuation;
Support tilt measurement intelligent correction;
General data link;
RTK cloud services;


Chinese Precision satellite receiving, single machine to achieve centimeter-level positioning
      Using Chinese Precision satellite reception, single machine can achieve 5 - 12 cm positioning accuracy, accurate and reliable.




Star trek
The Chinese Precision of the star chain navigation function can be used after the traditional RTK data link is unlocked
Maintain RTK measurement accuracy for 30 minutes.

Intelligent tilt correction
      Support tilt correction, 30 tilt range, 1 - 3cm correction accuracy, easy to measure the corner and other parts.
      The "Chinese Precision" wide-area satellite-based augmentation system broadcasts differential data to the world through the L - band geostationary orbit communication satellite, so that more areas beyond the coverage of the signal of the ground-based augmentation network, such as the sea, desert, mountain areas and the like, can also realize high-precision positioning services. The construction of "Chinese Precision" is not only the enterprise demand, but also the industrial demand, but also the national demand. As the first global high-precision enhancement system fully constructed and controlled by Chinese enterprises, "Chinese Precision" has all independent intellectual property rights and all control rights, breaks the technical monopoly and blockade of international enterprises, guarantees the security and autonomy of national geospatial information, makes up for the deficiency of precision, availability and integrity of China's satellite navigation industry, and develops and innovates the geographic information industry