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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
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2021
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Article
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Tab 1
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Research Article
Ground Risk Assessment of UAV Operations Based on Horizontal Distance Estimation under Uncertain Conditions
Table 1
Different sheltering factors in different areas [
29
].
Type no.
Area
Sheltering factor
Type 1
Reinforced concrete buildings
40
Type 2
Trees
20
Type 3
Sparse trees
10
Type 4
Area without obstacles
0