MAY 2019  
Hijacking of position data: A new GPS vulnerability Dinesh Manandhar | Soil moisture retrieval using indigenously developed NavIC-GPS-SBAS receiver Radhika A Chipades | Low cost UAV photogrammetric survey Faiz Arif, Abdul Aziz Ab Rahman and Khairul Nizam Abdul Maulud | Robotic forest harvesting process using GNSS satellite positioning data Anna Klamerus Iwan, Louis-Francois Pau, Mariusz Kormanek, Janusz Golab and Krysztof Owsiak | Interview Demetrios Matsakis
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FORESTRY

Robotic forest harvesting process using GNSS satellite positioning data
Anna Klamerus Iwan, Louis-Francois Pau, Mariusz Kormanek, Janusz Golab and Krzysztof Owsiak
In this paper we contribute experimental findings to the issue of the accuracy of GNSS location measurements in forest environments, by addressing the effects of harvester trajectory errors due to GNSS measurements...
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GNSS
Soil moisture retrieval using indigenously developed NavIC-GPS-SBAS receiver
Radhika A Chipade
The present work reports the very first attempt of utilising indigenously developed NavICGPS- SBAS (NGS) user receiver to retrieve volumetric (surface) soil moisture (VSM). R2 values of 0.78 to 0.94 were observed between estimated soil moisture and in-situ data...
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Hijacking of position data:A new GPS vulnerability
Dinesh Manandhar
GNSS signals are quite vulnerable to interference, jamming and spoofing. Interference and jamming can be either intentional or non- intentional. But, Spoofing is an intentional act and the most serious one...
[more]
UAV
Low cost UAV photogrammetric survey
Faiz Arif, Abdul Aziz Ab Rahman And Khairul Nizam Abdul Maulud
The research shows that UAV is applicable in monitoring changes along the coastal region which can be useful to assist the authority in deciding on enforcing nature conservation strategy to the affected site...
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HIS COORDINATES
"I am fascinated by the ability to use clocks, especially in space" says Demetrios Matsakis, Chief Scientist for Time Services at the US Naval Observatory (USNO) in an interview with Coordinates magazine. He shares his views on the range of issues related to timing and importance of satellite clock... [more]


© Coordinates ezine, 2019