Semi-covered Environment (in between buildings). 

Contexts in source publication

Context 1

... environment is selected within the University campus area in between campus buildings from all the sides. Fig 2 shows a picture of the selected environment. The small red circle shows the place where the system is placed to record the data. ...

Context 2

... hand side building is nearly 30m high and left side building is nearly 25 m high. The purpose of selecting this environment is to find the impact of multipath especially on low mask-elevation angle satellites. These signals normally come to the system via indirect reflected paths. Possible signal blockage and reflected signals are also shown in Fig. 2 coming from low elevation satellites, which add multipath to the measurement. shows the experimental results recorded with no multipath mitigation option and the improvement in the accuracy of the navigation system after mitigating multipath effects. The graph shows the accuracy of the system in metres against the type of measurement ...

Context 3

... environment is selected to find the accuracy of the system where virtually no multipath effects are present. Therefore a cricket ground outside the University area is selected to conduct experiments for this environment. Fig. 20 shows one of the areas of an open grass field of the cricket ground where a set of experiments is conducted. The small red circle shows the exact place where the mobile navigation unit is placed. The satellite signals are also shown with the possible signals coming towards the system. Few low elevation angle satellites may have ...

Context 4

... experiments are conducted with satellite mask elevation angles of 5, 10 and 15 degrees respectively. Fig 22 shows the graph of accuracy plotted against the satellites mask elevation angle. It is shown in the graph, that the accuracy of the system improves when mask elevation angle is increased, provided there is a minimum number of four visible satellites. ...