Questions answered by Evan Bollard, GlobalPOS
From an application point of view it is necessary to consider what accuracy is required from the results and what productivity level is acceptable for the application. GNSS receivers come in many forms and many things determine their performance. Currently, using small receiver chips embedded in consumer devices such as smartphones can be very handy for navigation to get to site, but they will not be able to identify the location of previously mapped buried services. For these types of applications, what can be termed professional grade receivers are required and it is easy to be able to obtain receivers capable of real time positioning at the centimetre level. But there are many choices to be made – do I need single, dual or even triple frequency capabilities? Do I need dual constellation or multi constellation capabilities?
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