Abstract:
Evaluating any new system and application before feasible and meaning full action have been
taken is a very important concept that should be considered. This study was conducted to evaluate
whether the currently under use hand held GPS is suitable for second level land certification in
terms of correctly indicating the area, boundary and spouse name of the holders. In order to do
this, two method data have been collected. These are socio economic and the field survey. For the
socio-economic data 92 land holders were selected by using Chocrhan formula of 1977 from three
kebeles, 15 experts of the land administration of the study woreda for questionnaires and interview
respectively. The result of the response indicates that, majority of the land holders are not
accepting the second level land certificates produced by HHGPS. The field test also made using
HHGPS and total station to evaluate the accuracy of the used instrument; the result indicates that
there exists a variation at point position level between the both instruments from -12m to 20m in
Easting and from -17to 27m in Northing, on average from 4m to 5.5m in easting and northing
respectively. Finally the result indicates that a RMSE of 4.245m and 5.759m in easting and
northing respectively. Concerning the area, the result indicates that there exists a variation
between the measurements of the two instruments from -1249.26m 2 to 1519.27m 2 in a total average
area of 279055m 2 of the surveyed area and the total area difference between the instruments
became 41.822m 2 . Depending on the findings, it is recommended that first to replace the low
accuracy of HHGPS by other surveying instruments like RTK GPS or total station, second to
evaluate the whole second level land certification and correct the past mistakes by updating
program and the government officials and policy makers should consider about using the correct
and accurate instrument.
Key words: cadastral, second level land certification, HHGPS, total station, point level position
difference, area difference