Category Archives: GNSS/Location Tech
GNSS: Triple-frequency Constellations
Triple-frequency observations for high-accuracy positioning has been studied for years. It’s proven to greatly improve RTK performance (fix rate, reliability, and precision) in challenging scenarios for dual-frequency RTK, for example with a very a long base line, very active ionospheric motion, and a severe multi-path environment. Triple-frequency observations also help shorten PPP convergency time significantly....
What Is South Surveying and Mapping Instrument Co.?
South Surveying and Mapping Instrument Co., LTD. holds a substantial share in the largest single market for such products. Until recently, it was not well known in the Americas; a sleeping giant may be awakening. Years ago, I started seeing South’s booths at trade shows like Intergeo and Conexpo, but in recent years I’ve begun...
Growth from China: an Interview with CHCNAV’s George Zhou
George Zhou has long been a figure in GNSS integration and product development, but he’s best known for founding and growing CHC Navigation from a startup in 2003 to a major global developer and producer of GNSS and geospatial hardware and software. As a follow-up to our November 2019 recap of our recent visit to...
Outlook 2020’s 40 Under 40
The following is xyHt’s 2020 collection of 40 under 40: profiles of motivated and accomplished young professionals under 40 years of age. Click on each name to view their profiles below. Kwabena Obeng Asiam Researcher & Lecturer – Leibniz University Published PhD candidate in land administration; FIG Young Surveyors Ghana Evaluating the evidence and making...
Flex! Bad Elf and Higher Precision
I took a new GPS mapping receiver out to the field for a test drive and found out that it is also a full GNSS survey rover. GNSS mapping peripheral-maker Bad Elf recently introduced a full survey-grade rover—and a unique pricing model. Surveyors might not be familiar with the name Bad Elf, but in the...
R10 → R10-2 → R12: Explained
The announcement of a new flagship rover for Trimble was met with positive chatter, but with a lot of questions as well. So, xyHt called the product manager… In short, the familiar form factor of the R10 (slim bucket on a pole) is still there, but in the seven years since it was introduced it...
