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LiDAR & Satellite Incorporated Application(12)
A Studied Case
Terrain analysis
Figure 1
Table 1
Figure 2
Following up the last section, although the various elevations for different cases are capable of being generated in terms of the refined data of LiDAR, the more concerned topics are thereby raised. For instance, ones may feel interested in vegetation coverage, amount of trees. To effectively and accurately resolve them, the situation can be taken into account separately as follows:
Hence, if vegetation in according to ASPRS standard for LiDAR can be classified into
1. Low vegetation (3), the vegetation coverage is certainly available to be considered;
2. Either high vegetation (5) or medium vegetation (4), such vegetation become countable. Nevertheless, in this case, unlike the low vegetation (3), the vegetation coverage can be explained as that each spatial volume of a tree is effectively projected onto a horizontal plain. Because there is a slop for each tilted plain, the surface area (thus effective vegetation coverage) is then gained through the corresponding slope.
In order for ones to understand this approach, a studied case for further research is offered. According to the case shown on Figure 1 (high vegetation (5)), some values of the desired parameters (see Table 1) are able to be accurately calculated by means of combining the introduced techniques with other techniques (see Figure 2). Actually, other massive cases in diverse researches can be performed in the same manner, and then a lot of practical significances are generated.
