Accuracy and precision of two laser dendrometers

TY - JOUR

T1 - Accuracy and precision of two laser dendrometers

AU - Skovsgaard, J. P.

AU - Johannsen, V. K.

AU - Vanclay, J. K.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - Two commercial laser dendrometers were tested under controlled and field conditions, and contrasted with alternative instruments. Testing focused on height measurement, but also considered distance and remote diameter measurements. Both laser instruments gave very precise estimates, but showed some bias. Users of these and other 'high-tech' instruments are reminded that precision is not synonymous with accuracy. Users should not become complacent about the submillimetre readout, but should calibrate instruments to examine if users' accuracy requirements are satisfied. Instruments may need to be re-calibrated each measurement season and after any mishandling.

AB - Two commercial laser dendrometers were tested under controlled and field conditions, and contrasted with alternative instruments. Testing focused on height measurement, but also considered distance and remote diameter measurements. Both laser instruments gave very precise estimates, but showed some bias. Users of these and other 'high-tech' instruments are reminded that precision is not synonymous with accuracy. Users should not become complacent about the submillimetre readout, but should calibrate instruments to examine if users' accuracy requirements are satisfied. Instruments may need to be re-calibrated each measurement season and after any mishandling.

UR - http://www.scopus.com/inward/record.url?scp=0031837662&partnerID=8YFLogxK

U2 - 10.1093/forestry/71.2.131

DO - 10.1093/forestry/71.2.131

M3 - Journal article

AN - SCOPUS:0031837662

SN - 0015-752X

VL - 71

SP - 131

EP - 139

JO - Forestry

JF - Forestry

IS - 2

ER -