Shun CAI, Haopeng GENG, Weishan ZHENG, Baotian PAN. Valley Spacing Character Information and Its Influencing Factors based on the Fourier Transform [J]. Journal of Geo-information Science, 2020, 22(3): 399
- Journal of Geo-information Science
- Vol. 22, Issue 3, 399 (2020)
Fig. 1. Locations of the study area and 0.12 m resolution DEM
Fig. 2. The terrain frequency characteristic signal about Lanzhou Dalingxian region with 1 m resolution and 75 m×75 m area(wavelength=1/frequency)
Fig. 3. Comparison of hill shade with different resolution and schematic diagram of valley spacing measurement
Fig. 4. The terrain frequency against the regression line slope about Heihe zhengyixia region with 1-10 m resolution and 650 m×580 m area
Fig. 5. The terrain frequency characteristic signal about Lanzhou Dalingxian region with different resolution and 1414 m×2071 m area
Fig. 6. The terrain distribution ranges about different areas with 1 m resolution
Fig. 7. The terrain frequency against the regression line slope about different areas with 1 m resolution
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Table 1. Key parameters of DJI Phantom 4 Pro V2.0
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