Table 4.
Types of satellite imagery used to detect conflict events or patterns of events.11 Own categorization. Articles that use imagery from several clusters are marked with a.
| Cluster | Type of satellite data | Articles that use it for conflict event detection | ||||
|---|---|---|---|---|---|---|
| Costs | Spatial Res. | Temp. Res. | Optical | SAR | Both | |
| 1 | Commercial | High | Tasked | (33a, 36, 38, 45, 52–54, 56, 57, 60, 61) | [31a] | (58) |
| 2 | Commercial | High | Regular revisit | (40) | ||
| 3 | Free | Moderate | Regular revisit | (33a, 37, 39, 41, 44, 55, 59) | [31a, 35, 43] | (32a, 42) |
| 4 | Free | Low | Regular revisit | (46–51, 63–66) | (32a) | |