Results 81 to 90 of about 436,322 (188)
Improving the method of harvest inventory through the use of GPS receptors [PDF]
, 2011 Harvesting inventories which involve the counting of all exploitable species are labour intensive operations often neglected by the forestry companies. A full inventory is nevertheless the foundation of a traceability system, which is now required of all
Forni, Eric +4 more
core
Hybrid Urban Navigation for Smart Cities
, 2017 This paper proposes a design for a hybrid, city-wide urban navigation system for moving agents demanding dedicated assistance. The hybrid system combines GPS and vehicle-to-vehicle communication from an ad-hoc network of parked cars, and RFID from fixed ...
Gilmore, Robert +3 more
core +1 more source
Butterworth Pattern-based Simultaneous Damping and Tracking Controller Designs for Nanopositioning Systems [PDF]
, 2016 Peer reviewedPublisher ...
Aphale, Sumeet Sunil +3 more
core +2 more sources
SHAtropE—A Regional Gridded ZTD Model for China and the Surrounding Areas
Remote Sensing, 2020 A regional zenith tropospheric delay (ZTD) empirical model, referred to as SHAtropE (SHanghai Astronomical observatory tropospheric delay model—Extended), is developed and provides tropospheric propagation delay corrections for users in China and ...
Junping Chen +4 more
doaj +1 more source
Galileo-based precise point positioning with different MGEX products
Measurement Science and Technology, 2020 Considering the remarkable progress of the Galileo constellation in recent years, the main objective of this study is to evaluate the performance of dual- and single-frequency Galileo-based precise point positioning (PPP), and its contribution to GPS and Galileo integration with different precise products generated by four analysis centers (ACs) within
Berkay Bahadur, Metin Nohutcu
openaire +2 more sources
Integrated real-time precise point positioning system with B2b/B2a/B1C services
Satellite NavigationReal-Time Precise Point Positioning (RTPPP) technology is one of the most important means of positioning and navigation, whereas this type of service requires Internet access.
Zhetao Zhang, Hao Wang, Yuanxi Yang
doaj +1 more source
Remote Sensing, 2019 Real-time multi-GNSS precise point positioning (PPP) requires the support of high-rate satellite clock corrections. Due to the large number of ambiguity parameters, it is difficult to update clocks at high frequency in real-time for a large reference ...
Xinyuan Jiang +4 more
doaj +1 more source
Precise Point Positioning in the Airborne Mode [PDF]
International Conference on Aerospace Sciences and Aviation Technology, 2011 The Global Positioning System (GPS) is widely used for positioning in the airborne mode such as in navigation as a supplementary system and for geo-referencing of cameras in mapping and surveillance by aircrafts and Unmanned Aerial Vehicles (UAV). The Precise Point Positioning (PPP) approach is an attractive positioning approach based on processing of ...
openaire +3 more sources
Remote Sensing, 2019 Ionospheric delay as the major error source needs to be properly handled in multi-GNSS (Global Navigation Satellite System) single-frequency positioning and the different ionospheric models exhibit apparent performance difference.
Ahao Wang +4 more
doaj +1 more source
The Implementation of Precise Point Positioning (PPP): A Comprehensive Review. [PDF]
Sensors (Basel), 2023 Elsheikh M +3 more
europepmc +1 more source