| GPS Errors and Accuracy
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| Accurate determination of position by GPS depends on treatment of various types of errors inherent in the technology. Errors in GPS observations can be categorized on the bases of nature or source of errors as follows:
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| On the basis of nature of errors |
- Random errors
- Systematic errors
- Satellite related errors
- Receiver related errors
- Signal propagation errors
- Gross errors
- Loss of satellite signal lock
- Corruption of GPS signals due to any power line or object having magnetic characteristics
- Improper leveling and/or centering of receiver antenna
- Errors in measuring height of antenna center from ground
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