We now describe the difference in technology between a satellite positioning system and a terrestrial positioning system. Mathematics is important to the deployment and usage of satellites. There is a combination of different types of mathematics. Processing digital data extracted from satellite signals requires deterministic mathematics. These signals pass through the atmosphere and fluid mech...

Current Global Navigation Satellite Systems (GNSS), such as the GPS and Glonass systems, have been widely used in surveying and geodesy. It is well known that for such spaceborne satellite positioning systems the accuracy, availability and reliability of the positioning results is very dependent on both the number and geometric distribution of satellites being tracked. However, under some harsh...

Position estimation and motion processing in 3D space are becoming increasingly popular because they find applications in many fields including navigation, surveying, gaming, security, medical, etc. Conventional tracking systems are based on a global positioning system (GPS) or similar principles. Traditionally, localization is done with the help of distance measurements of known reference and ...

The rapidly aging population not only causes long hospital waiting times and expensive hospital waits, but also it increases the time to fix an appointment, workload of doctors and medical practitioners. Managing the cost and quality of treatment and caring of seniors are becoming key pressing issues both in developed and developing countries. Diagnosing and continuous record of realtime data b...

In this paper we propose a new data fusion method based on particle filtering and fuzzy logic in order to adaptively integrate global positioning system and strapdown inertial navigation system (GPS/SDINS). This approach will reduce the dependence of the stable solution on stochastic properties of the system which is a function of vehicle dynamics and environmental conditions So the proposed sc...

Blue force tracking (BFT) is a military technology that provides positional awareness of friendly forces on a digital map through global positioning system (GPS) technology. For dismounted soldiers, having readily available information on the location of friendly forces can be critical for mission success. However, GPS can report positions that are spatially inaccurate. The present study requir...

Global Positioning System (GPS) surveying is now seen as a true three dimensional tool and GPS heighting can be a viable alternative to other more conventional forms of height measurement. This paper examines the limitations and possibilities of GPS heighting. The first part of the paper details the limitations of GPS heighting, including those factors that affect the GPS height measurement its...

This paper describes a method to directly measure the physical sag of overhead electric power transmission conductors. The method used relies on the Global Positioning System (GPS) used in the differential mode. The direct measurement of sag is a main advantage of the concept. The digital signal processing required is described in detail in a four level configuration. Typical accuracy, response...

[1] The driving forces for crustal deformation are often inferred from the crustal kinematics. In the Southwestern United States, however, crustal kinematics delineated by the Global Positioning System (GPS) measurements differs significantly from that reconstructed from the geological records. This discrepancy is likely due to the different timescales reflected in these datasets. Here we explo...

Traffic is increasing day by day because of the increasing in vehicle usage especially in urban areas. Congestion in traffic also increases with the increase of vehicle numbers. To regulate the flow of vehicles we are presently using traffic light controllers which has three signals . With the help of these signals we can regulate the vehicle's direction. Most of the controllers has some fixed ...