Since its inception, Chance Position has been providing a variety of access methods through its own technical strength to ensure that it can bring quality high-precision services to a wide range of enterprises and industries.
Introduction to high-precision positioning
The traditional satellite positioning, generally through the receiver directly receive satellite signals, through a simple positioning algorithm to obtain location information, we commonly use the cell phone is this principle, this is usually the meaning of single-point positioning.
But in fact, the satellite work by a number of factors interference, for example: satellite signals through the earth's troposphere, the ionosphere will be refracted, shot to the building will be reflected, which will lead to errors in the calculation of the signal propagation time, and then bring about errors in the calculation of the distance, resulting in tens of meters of positioning error. In order to eliminate such errors, differential positioning is generally used, specifically, to establish some fixed observation stations at fixed locations and observe the satellite signals at the same time, and then establish a mathematical model of the error through the observation, and then broadcast the differential correction to the terminal to be measured. At present, the common RTCM is the format of differential correction.
The terminal can obtain high-precision positioning results through algorithms based on its own satellite observation, combined with the received differential corrections. The most commonly used algorithm is the RTK (Real Time Kinetic) algorithm, through which the positioning accuracy can reach the centimeter level.
One Network for Thousand Search
The differential positioning technology just mentioned is the core of high-precision positioning mentioned in this article. In traditional surveying and mapping applications, a separate base station is often set up, and the differential correction RTCM is broadcasted to the terminal through radio, small wireless and other local communication methods. Due to various limitations, this method can only cover a very small area and cannot be used in a wide range.
At present, Chance Location has set up more than 2,400 ground-based augmentation stations nationwide. Relying on the "one nationwide network" of the national BeiDou ground-based augmentation system and upgraded self-developed algorithms, Chance Position can effectively overcome the impact of complex environments and provide real-time centimeter-level high-precision positioning services to most areas of the country, as well as realizing 7*24-hour data broadcasting through the Internet platform. Therefore, as long as the user terminal connects to Trespa's server via 2G/3G/4G network and reports its approximate location, the server will send the differential correction data from the base station near the terminal's location to the terminal, so that the user can obtain RTCM data for a long time and complete the high-precision positioning on the terminal side.
Users need to access ChanceNet server to get RTCM data, as long as they integrate the SDK provided by ChanceNet into their own system, and input the ChanceNet account, they can log in ChanceNet server to get RTCM data.
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 R & D and promotion of experience, JUNODA has established a rich experience in hardware and software development of the technical team, aims to provide high-quality, high-performance wireless modules and application solutions to domestic and foreign OEM / ODM customers and system integrators, and is committed to creating long-term customer satisfaction. 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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