Averin Sergei

Sergei Averin works at Topcon Moscow Office as the Positioning Algorithm Development Group Leader. His group is responsible for developing positioning algorithms for all Topcon products, as well as their support. One of the group’s main objectives is to support and update algorithms for real-time kinematics (RTK). Sergei Averin has a Ph.D. in engineering and has been working on satellite navigation since 1992.

Reports:

“SPHERE” CONGRESS SECTION Space Systems of Earth Remote Sensing. Geoinformation Systems and Services. High-Accuracy Satellite Navigation part 2
«AMP™ – Topcon technology for high-accuracy positioning with enhanced reliability using signals from global navigation satellite systems»
Real-time kinematics (RTK) is a technique, which allows for cm-level positioning accuracy. The core of RTK is carrier phase ambiguity resolution (AR). In challenging conditions GNSS measurements are often distorted, what reduces the success rate of AR, and leads to outlying solutions due to incorrect AR.
The core of RTK is carrier phase ambiguity resolution (AR).
Topcon developed and patented the technology Advanced Multi-engine Platform (AMP™), which is based on the idea of running several RTK engines in parallel to output a unified solution. The most obvious approach to this idea is to have several RTK engines running simultaneously with different settings. However, when AMP™ is implemented within the B210 board of Topcon, the approach is different.
Topcon’s B210 GNSS receiver board is an innovative device capable of tracking and processing all available GNSS open signals: GPS, GLONASS, GALILEO, Beidou in three frequency ranges.
However, the main B210 feature is that the board has two RF front-ends connected to different antennas and a single digital section. Such an architecture makes it possible to fulfill two tasks:
  • calculating attitude parameters (heading and tilt angle) with two antennas using a unique algorithm developed by Topcon;
  • providing better RTK performance due to synergy of attitude determination and RTK solutions, computed within a single digital section for two antennas.
  • The practical use of AMP™ technique on the B210 board gives the improvement of RTK characteristics, comparing to the classic approach. For example, in urban areas AMP™ ensures increasing the number of fixed solutions by 5-10% and decreasing the number of anomalous solutions by 1-7%, depending on conditions.
    The speech will present peculiarities of designing the B210 board, AMP™ algorithm aspects, practical use results.