RTK from Satellite –Tersus Advanced Positioning Unlocks Anywhere

RTK from Satellite –Tersus Advanced Positioning Unlocks Anywhere

Tersus

PPP stands for Precise Point Positioning. This technology enables the server to utilize global or regional reference stations to make real-time estimations of satellite orbit errors, clock errors, etc., broadcasting the data directly to the end users via satellite or over the internet. By using a single GNSS receiver, we can achieve global high-precision absolute positioning.

RTK vs. PPP

In the surveying industry, there are two common methods for high-precision GNSS positioning: Real-Time Kinematic (RTK) and Precise Point Positioning (PPP). Despite the advantages of both methods, PPP is becoming the preferred option in situations where infrastructure limitations, global applicability, and cost efficiency are of the utmost importance.

RTK requires a network of local reference stations to provide differential corrections, resulting in the setup maybe expensive and logistically challenging, especially in remote areas. However, PPP is not dependent on local infrastructure and is more suitable for areas without nearby reference stations due to the precise satellite orbits and clock corrections broadcast from a global reference network.

In terms of coverage, RTK is restricted to the area within the range of the base station. Users outside this range cannot benefit from RTK corrections. In addition, because RTK is region-specific, it can be complex and confusing for most end users to conduct joint operations across multiple regions, requiring conversions between different coordinate systems. Unlike the limited coverage, PPP services are available worldwide, allowing to achieve high accuracy anywhere, including in remote and rural areas. It also provides a consistent framework and accuracy around the world, meaning that wherever you are, you only need one receiver and a very simple operation to achieve high-accuracy positioning.

What is the best solution?

With these theory foundations, we can delve into a new discussion by imagining a special scene. Do you ever think of working on the sea, what are the difficulties? The top things are base station is hundreds of kilometers away and a stable network isn’t available, traditional RTK becomes impractical.

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Then how to handle the issue efficiently? From a professional perspective, PPP services can be an ideal solution. Correction information is directly received from geostationary orbit satellites, enabling to obtain stable, high-precision coordinates in a short time.

Furthermore, in surveying and agriculture, the absence of network coverage or base stations can hinder project efficiency. Tersus GNSS understands these challenges and addresses them by providing high-precision positioning solutions even in remote areas. Beyond traditional sectors, industries such as robotics and autonomous driving heavily rely on accurate positioning for enhanced efficiency, a need met by Tersus GNSS through its cutting-edge PPP technology.

TAP, Tersus Advanced Positioning

Tersus Advanced Positioning, abbreviated TAP, is a precise point positioning service developed by Tersus GNSS. This can perfectly meet the mentioned demand, especially for centimeter-level high-precision positioning in areas without or with poor network coverage.

With the following highlights feature, TAP can achieve centimeter-level high-precision positioning worldwide and is particularly significant in marine surveying, precise agriculture, and autonomous driving industries.

Not only tells wonderful stories but also shows real strength. Tersus GNSS technical team has put TAP service into some cases for tests, and Figures 1 & 2 provided will prove the preferred choice.

Figure 1 illustrates the residual sequence of TAP observations over a 16-hour period, featuring a stable TAP fixed solution with a horizontal standard deviation of 1.09 cm and a vertical standard deviation of 2.39 cm.

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Figure 1. Analysis of the stability of TAP long-term static observation positioning

Figure 2 illustrates the residual sequence of TAP compared to RTK under dynamic conditions. The test was conducted on a farm using a tractor equipped with a high-precision autonomous driving solution. The data has aligned the epoch frame of PPP with that of RTK. The routes for both PPP and RTK closely overlap, showing a horizontal residual of 1 cm and an elevation residual of 3 cm.

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Figure 2. Comparison of TAP and RTK vehicle-mounted dynamic test positioning in a farm

Tersus GNSS’s high-precision positioning solutions are revolutionizing industries globally. Founded in 2014, we have been pioneers in the design and development of GNSS RTK products to better cater to the industry’s needs.

Our portfolios cover GNSS boards and modules for integration, Smart antennas Luka and Trek for land surveying, CORS Systems hardware and NRTK software, Mobile Mapping System, Auto steering system AG992 for precision agriculture, etc.

With versatile and reliable offerings, Tersus GNSS sets new benchmarks in high-precision positioning, propelling innovation across sectors and paving the way for unparalleled accuracy and efficiency.

This page was produced by North Coast Media’s content marketing staff in collaboration with Tersus. NCM Content Marketing connects marketers to audiences and delivers industry trends, business tips and product information. The GPS World editorial staff did not create this content.