GPS Application to Optimize the Utilization of Remote Sensing
IV. Geographic Information System
Geographic Information System (GIS) is a system to catch the data from inventory and then analyze the data for specific application. Some software can handle two type of data, vector and raster data.
The Indonesia's natural Resources GIS (INRGIS) uses three level of scale, that is 1:2.500.00 for national level, 1:250.000 for provincial level and 1:25,000 for regional level. In order to tied up the same information on different level, in every level has to use the same coordinate, that is geographic coordinate (latitude, longitude). So, when the changing information was known in the regional level, this changing must be updated on provincial and national level.
Indonesia's Natural Resources GIS
V. Analysis
The pixel size more and more smaller, so must be followed by increasing the accuracy of positioning of ground control point that will be use for geometric correction. For example, in updating base mapping at scale 1:250.000, if ground control point measured from digitized point at those map, thus digitizing error .5 mm will equivalent 125m on the ground, this is not proportional with the pixel size (10m). In this manner smaller pixel size doesn't meaning to improve map was caused mistake in the methodology.
To optimize GPS utilization for map improvement and map updating, signalization can be done in the field with good reflector for the type of sensor in order to get clear position of ground control point.
Matching the updated map to the base map coordinat
| Satellite |
Scanner |
Band |
Wavelength |
Ground Resolution (m) |
Cover km |
| Landsat |
MSS |
1 |
.5 |
- |
.6 |
79 |
185 |
| |
|
2 |
.6 |
- |
.7 |
|
|
| |
|
3 |
.7 |
- |
.8 |
|
|
| |
|
4 |
.8 |
- |
1.1 |
|
|
| Landsat |
TM |
1 |
.45 |
- |
.52 |
30 |
185 |
| |
|
2 |
.52 |
- |
.60 |
|
|
| |
|
3 |
.63 |
- |
.69 |
|
|
| |
|
4 |
.76 |
- |
.90 |
|
|
| |
|
5 |
1.55 |
- |
1.75 |
|
|
| |
|
6 |
10.3 |
- |
12.5 |
120 |
|
| SPOT |
HRV |
1 |
.50 |
- |
.59 |
20 |
60 |
| |
|
2 |
.61 |
- |
.68 |
|
|
| |
|
3 |
.79 |
- |
.89 |
|
|
| |
Panchromatic |
|
.51 |
- |
.73 |
10 |
60 |
| |
|
|
|
|
|
|
|
| Radarsat |
Standard |
C |
|
|
|
25 |
100 |
| |
Wide (1) |
C |
|
|
|
48-25 |
165 |
| |
Wide (2) |
C |
|
|
|
32-25 |
150 |
| |
Fine Res. |
C |
|
|
|
11-9 |
45 |
| |
ScanSAR (nar) |
C |
|
|
|
50 |
305 |
| |
ScanSAR (nar) |
C |
|
|
|
100 |
510 |
| |
Extended (H) |
C |
|
|
|
22-19 |
75 |
| |
Extended (L) |
C |
|
|
|
63-29 |
170 |
| ERS -1 |
|
C |
|
|
|
26 |
100 |
| JERS - 1 |
|
L |
|
|
|
18 |
75 |
| Almaz |
|
S |
|
|
|
15-30 |
20-45 |
| Seasat |
|
L |
|
|
|
25 |
100 |
