Internatior 
COMP; 
KEY WORDS: 
ABSTRACT 
Within the past 
applications as 
one may expect 
imagery as it bec 
There are now a 
associated cost 
mapping produc 
increasing detail 
DEMS at increas 
or lidar and (3) i 
In this paper we 
and interferomet 
Intermap Techn 
for several hund 
over smaller are: 
In this paper, tt 
application areas 
areas, and (iii) f 
are treated as tru 
‘noise floor’ at t 
performance is 1 
coverage is requ 
than competitive 
Digital Elevati 
increasingly at ; 
range of applic: 
technology, tenc 
— that is, wit 
introduction of 
sensors (specifi 
hand, and scant 
recent years, ex 
DEMS can be cc 
Radar is able tc 
day/night, clou 
positively impa 
DEMs. Interf: 
much attention 
improve the lev 
DEMs. Since e 
have been acqu