1a). For a single, handheld, GPS receiver operating in pointpositioning mode: i. Explain how the receiver uses signals fromfour satellites to determine its position on Earth. ii.Approximately what East, North and Height accuracy would you expectfrom this receiver? iii. What are the main factors that limit thepositioning accuracy of this receiver? (b) Whattechniques are used to overcome the spatial accuracy limitations ofa single, handheld, GPS receiver operating in point positioningmode?
