DEM

SRTM¹

ASTER¹

CDED²

NB-DEM³

LiDAR-DEM⁴

Coverage

Global

Global

Global

National

Provincial

Site-Specific

Resolution, m

90

30

30

22

10

1

Vertical Error, m

±16

±7

±17

±6

±3

±0.15

Reference

[25]

[26]

[21]

[27]

This study

[24]

Data Type

DSM

DSM

DEM

DEM

DEM

DEM

Format

Integer

Integer

Integer

Integer

Floating Point

Floating Point

Acquisition Year

2000

2000

2000

2000

1999

2012-2017

Technology

Radar

Radar

Stereo Pairs

Contours, Spot Heights

Stereo Pairs

Laser

Original Spacing

3 arc second

1 arc second

1 arc second

0.75 arc second

75 m

1 m