| Stop and Go (semi-kinematic) |
Requires at least one stationary receiver and at least one other rover, all observing the same set of satellites simultaneously. The reference receiver occupies same position throughout whereas the rover stops for a while at occupied positions. The method has the following charactersistics in the stop and go mode (Figure 12.6 (a) and (b)):
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Go Mode
- Once enough data is collected to resolve the ambiguities, user can now move the receiver
- Lock must be maintained on a minimum of 4 satellites at all time
- Each point visited (starting from 1, 2, 3, etc.) requires only 2 epochs of data
- If lock is lost, the system must be re-initialized
Accuracy ± ( 10-20 mm + 1ppm)
Applications Detail and engineering surveys in open areas
Drawbacks New static or rapid static fix is needed if complete loss of lock.occurs
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