Using materials of radar mapping from spacecrafts as a way to increase reliability, as well as to reduce the cost and time of site selection for extended linear construction projects

Table 3.

Results of mathematicalanalysis of the compared topographic models.

Parameter Topographic survey ALOS AW3D SRTM ASTER GDEM

Mean 157.96 156.62 156.14 157.40
Variance 1,397.54 1,406.24 1,401.24 1,445.96
Mean error 0.51 0.51 0.51 0.52
Thickest value 134.00 130.00 147.00 139.00
Standard deviate 37.38 37.50 37.50 38.03
Kurtosis -0.61 -0.59 -0.60 -0.57
Skewness 0.15 0.15 0.14 0.13