GPS Survey
GPS is a vital part of surveying and mapping activities around the world. It was one of the first to take advantage, because it dramatically increased productivity and resulted in more accurate and reliable data.
GPS supports the accurate mapping and modeling of the physical world — from mountains and rivers to streets and buildings to utility lines and other resources. Features measured with GPS can be displayed on maps and in Geographic Information System (GIS) that store, manipulate, and display geographically referenced data.
GPS Survey Example
In the example of Mandarmani sea beach Survey, using Garmin eTrex 10 GPS Device. AOI below the entire area mapped was 1.3 square miles. The 15 GCPs that were available are shown tagged in the ortho and did not represent the best spatial distribution for an area of that size.
Mandarmani- 1:
| Sl No. | Waypoints | Latitude (N) | Longitude (E) | Distance from preceding waypoint (m) | Elevation (m) |
|---|---|---|---|---|---|
| 1 | MM-1 | 21°39’42.70″ | 87°42’3.89″ | 0 | 6.398827 |
| 2 | MM-2 | 21°39’43.53″ | 87°42’5.53″ | 54.4 | 8.215771 |
| 3 | MM-3 | 21°39’44.09″ | 87°42’7.17″ | 51.3 | 7.965897 |
| 4 | MM-4 | 21°39’44.90″ | 87°42’9.62″ | 76.4 | 8.644405 |
| 5 | MM-5 | 21°39’45.42″ | 87°42’11.18″ | 47.8 | 6.45826 |
| 6 | MM-6 | 21°39’46.00″ | 87°42’12.95″ | 53.4 | 5.289703 |
| 7 | MM-7 | 21°39’46.41″ | 87°42’14.41″ | 44.0 | 6.224339 |
| 8 | MM-8 | 21°39’46.80″ | 87°42’15.73″ | 38.7 | 5.74778 |
| 9 | MM-9 | 21°39’46.90″ | 87°42’17.19″ | 43.4 | 5.019794 |
| 10 | MM-10 | 21°39’46.84″ | 87°42’18.33″ | 33.6 | 5.019794 |
| 11 | MM-11 | 21°39’46.88″ | 87°42’19.62″ | 38.0 | 4.10062 |
| 12 | MM-12 | 21°39’47.26″ | 87°42’21.22″ | 48.1 | 4.033909 |
| 13 | MM-13 | 21°39’47.60″ | 87°42’23.03″ | 54.2 | 3.587029 |
Mandarmani- 2:
| Sl No. | Waypoints | Latitude (N) | Longitude (E) | Distance from preceding waypoint (m) | Elevation (m) |
|---|---|---|---|---|---|
| 1 | MN-1 | 21°39’42.70″ | 87°42’3.89″ | 0 | 3.587029 |
| 2 | MN-2 | 21°39’43.53″ | 87°42’5.53″ | 51.1 | 4.194954 |
| 3 | MN-3 | 21°39’44.09″ | 87°42’7.17″ | 82.5 | 5.659748 |
| 4 | MN-4 | 21°39’44.90″ | 87°42’9.62″ | 61.2 | 7.906815 |
| 5 | MN-5 | 21°39’45.42″ | 87°42’11.18″ | 166.0 | 5.358456 |
| 6 | MN-6 | 21°39’46.00″ | 87°42’12.95″ | 126.0 | 10.388199 |
| 7 | MN-7 | 21°39’46.41″ | 87°42’14.41″ | 148.0 | 10.610287 |
| 8 | MN-8 | 21°39’46.80″ | 87°42’15.73″ | 93.8 | 9.939461 |
| 9 | MN-9 | 21°39’46.90″ | 87°42’17.19″ | 192.0 | 15.925201 |
| 10 | MN-10 | 21°39’46.84″ | 87°42’18.33″ | 66.8 | 8.772717 |
| 11 | MN-11 | 21°39’46.88″ | 87°42’19.62″ | 87.3 | 1.745041 |
| 12 | MN-12 | 21°39’47.26″ | 87°42’21.22″ | 53.5 | 0.765091 |
| 13 | MN-13 | 21°39’47.60″ | 87°42’23.03″ | 93.6 | 0.265633 |
GPS Survey Equipment
The GPS & GNSS survey equipment are;
- GPS Device
- RTK GPS Systems
- Sub Meter GPS
- GNSS Receivers (DGPS)
- External Radios
- Depth Sounder
- Accessories
- External Radio Cable
- Rover Pole
- Drone