Abstract. There has been much advancement in GPS receiver technology in recent years. GPS accuracy, especially the dynamic (moving) accuracy, is very important in precision agriculture for collecting data and controlling variable rate inputs. Typical applications of GPS receivers in agriculture include yield monitoring, parallel tracking and variable-rate application of fertilizer. Perhaps more...

Global Positioning System (GPS) based aircraft landing is a methodology still not in use today despite the widespread use of GPS. This is primarily because a standard single frequency Global Positioning System (GPS) receiver provides a positioning accuracy of approximately 4-20 m which is not acceptable by aviation standards for precision landings. The accuracy of GPS can be further enhanced wi...

GPS timing receivers have been used for synchronizing telecommunications equipment since the early 90’s, currently providing an accuracy of up to 10ns. Such a high requirement of accuracy demands excellent operation from GPS timing receivers, avoiding the degradation of the synchronization process. Interference is an important threat to GPS performance. Such harmful interfering signals can orig...

N O V E M B E R / D E C E M B E R 2 0 1 4 www.insidegnss.com Efficient power transmission and distribution would benefit from synchronized near–real-time measurements of voltage and current phasors at widely dispersed locations in an electric power grid. Such measurements also could enable effective realtime system monitoring and control, which are considered to be the key to preventing wide-sc...

A standard single frequency Global Positioning System (GPS) receiver provides a positioning accuracy of approximately 4-20 m. This precision can be further enhanced with dual frequency receivers which are able to provide accuracy around 1-12 m. However, these errors are quite large when it comes to safety of life applications such as aircraft landings. Differential GPS (DGPS) allows for precise...

GPS (Global Positioning System) has a variety of applications among which real-time tracking finds significance in day-to-day life. GPS tracking is defined as the measurement of object position and orientation in a given coordinate system using GPS data at different points of time. GPS data are collected from GPS receivers attached to the moving objects and these data are used for tracking obje...

GPS is the popular positioning technology widely used for many applications. However, many GPS receivers have difficulty tracking signals in harsh environments such as urban canyons or indoors. So-called “high sensitivity” GPS (HSGPS) receivers have been developed to address this problem, and nowadays many different models of HSGPS receivers can be found in the market. For example, the latest m...