Since its establishment, Chance has been providing enterprises and industries with a variety of access methods through its own technical strength to ensure high-quality and high-precision services.
When it comes to high-precision positioning services, it may be more abstract for most people. What is high-precision positioning service and how should I integrate Trespa's high-precision service? Don't worry, this article will introduce the services provided by Thousandsearch and discuss how to access Thousandsearch's high-precision services.
Introduction to High-precision Positioning
Satellite positioning in the traditional sense is generally done by directly receiving satellite signals through a receiver and obtaining location information through a simple positioning algorithm. This is the principle of our commonly used cell phones, which is usually single-point positioning.
But in fact, satellite work is interfered by many factors. For example, when the satellite signal passes through the earth's troposphere and ionosphere, it will be refracted onto buildings, leading to miscalculation of the signal transmission time, which in turn leads to miscalculation of the distance, resulting in a positioning error of tens of meters. Eliminate this error difference, generally use difference positioning, especially in the fixed position to establish some fixed observation stations, while observing the satellite signal, and then through the observation to establish the error mathematical model, and then change the difference of the positive number of broadcast to the terminal to be measured. At present, the common RTCM is the format of differential correction.
According to their own satellite observation and received differences, the terminal can obtain high-precision positioning results through algorithms, of which the most commonly used is RTK (Real Time Kinetic) positioning accuracy up to centimeter level.
National Thousand Search One Network
The difference positioning technology just mentioned is the core of high-precision positioning mentioned in this article. Traditional surveying and mapping applications usually correct differences RTCM broadcast to terminals by establishing their own base stations through local communication methods such as broadcasting and small wireless. Due to various limitations, this method can only cover small areas and cannot be widely used.
At present, Chance Position has established Super Position 2400 base enhancement stations in China. Relying on the national network of the National BeiDou Basic Enhancement System and the continuous upgrading of self-developed algorithms, Chance Position can effectively overcome the influence of the complex environment, provide real-time centimeter high-precision positioning services for most areas of the country, and broadcast hourly data through the Internet platform for 7*24. Therefore, as long as the user's terminal connects to the Thousandsearch server via 2G/3G/4G network and reports its overall position, the server will send a message to the terminal about the vicinity of the terminal's position. The server will send the difference correction data of the base station near the terminal position to the terminal, and the user can obtain the RTCM for a long time to complete the high-precision positioning on the terminal side.
Users need to access the RTCM of Trespa server as long as Trespa provides the data, SDK is integrated into their own system, and they input Trespa account and log in Trespa server to get the RTCM data.
Trespa Service Access Mode
At present, there are two access modes for the high-precision services provided by Trespass Location, which are manually configured by the SDK.
Requesting positioning service from Trespa via differential password and over-differential password and account number is applicable to NTRIP small batch access protocol terminals that have been opened to provide more professional and high-precision services.
The SDK provides specific development kits for different hardware and software platforms and operating systems. Developers can use the SDK provided by Chance Position to automatically connect to the positioning services provided by Chance Position for mass-produced devices, which is applicable to the scenarios of terminals accessing Chance Position's services in large quantities and the terminals have not opened the NTRIP protocol.
Previously, Trespa has launched SDKs for iOS and Android differential data to help developers access Trespa's high-precision services and high-precision positioning services. Users can access the SDK packages for accessing high-precision positioning services through the official website, Development-Differential Data SDK.
Ltd. specializes in high-precision GNSS modules and wireless communication products, technology development and application promotion service providers, relying on the wireless communication technology in the field of research and development and promotion of experience, Junoda established a rich experience in hardware and software development of the technical team, aimed at domestic and foreign OEM / ODM customers and system integrators to provide high-quality, high-performance wireless modules and applications! We aim to provide high-quality, high-performance wireless modules and application programs to OEM/ODM customers and system integrators at home and abroad, and create long-term value for customers!
The company mainly provides integrated antenna module, dual-frequency high-precision module, single-frequency high-precision module, thousand-seeking high-precision module, Zhongke micro-positioning module, U-BLOX positioning module, SICOM communication module, inertial navigation DR module, UWM GNSS module, RTK differential module, 4G communication module and high-precision antenna, etc., the products are sold well in Beijing, Shanghai, Shenzhen, Guangdong, Jiangsu, Zhejiang, Sichuan, Hunan and other parts of the country. Our GNSS modules are widely used in many application fields, such as drones, vehicle security monitoring and scheduling, automatic bus stop announcement, DVR, car DVD navigation, GPS electronic dog, synchronized timing, high-altitude balloon monitoring, engineering machinery, industrial automation, etc. In the field of wireless communication products, our company is closely involved in the development and production of wireless communication products, such as RTK differential modules, 4G communication modules and high-precision antennas.
In the field of wireless communication products, the company follows the latest development of international communication technology, introduces and acts as an agent for wireless communication modules that meet the market demand, and the products have a comprehensive layout from 2G, 3G, 4G, and are widely used in financial electronic payment, vehicle remote control, remote advertising information, repeater monitoring, mobile Internet terminals, smart home, remote medical care, network testing, enterprise information management, anti-theft alarm, Remote video transmission, intelligent meter reading, mobile computing, network navigation, voice phone, wireless gateway and other fields. Focus areas include video surveillance, network optimization, routers, POS and other M2M industry applications.
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