<![CDATA[ABSTRAKElectronic Total Station (ETS) merupakan gabungan dari alat ukur sudut dan jarak digital serta unit pemrosesan dan unit perekaman data. ETS Reflector-less merupakan sistem pada ETS untuk Electronic Distance Meter (EDM) atau alat pengukur jarak tanpa reflector. Spesifikasi ketelitian jarak reflector-less pada alat ETS Hi-Target ZTS 320R adalah sebesar (3mm + 2ppm x D) mm, dimana D adalah panjang jarak ukuran dalam satuan kilometer. Pada penelitian ini dilakukan kajian pengaruh jenis target terhadap kualitas hasil pengukuran ETS Reflector-less. Perbandingan jarak antara pita ukur baja dan ETS reflector-less dilakukan sebanyak 30 kali dengan jarak 20 m, 30 m, dan 50 m untuk masing-masing jenis target tembok bangunan, besi, kayu dan tanah. Hasil yang diperoleh ketelitian jarak reflector-less untuk jenis target tembok bangunan sebesar ± 0.002 m, jenis target besi sebesar ± 0.002 m, jenis target kayu sebesar ± 0.001 m, dan jenis target tanah sebesar ± 0.002 m.Kata kunci: ketelitian, jarak, reflector-less, ETS Hi-Target ZTS 320RABSTRACTElectronic Total Station (ETS) is a combination of reflector-less digital angle and distance measuring devices as well as processing units and data recording units. Reflector-less is a system on ETS for Electronic Distance Meter (EDM) or a distance meter without reflector. The specification of the accuracy of the reflector-less distance on the ETS Hi-Target ZTS 320R is equal to (3mm + 2ppm x D) mm, where D is the length of the distance distance in kilometers. This research aims to study the influence of the type of target on the accuracy of measurement results derived from ETS Reflector-less. The comparison of distance measurements between steel measuring tape and ETS reflector-less were performed 30 times with spacing of 20 m, 30 m, and 50 m for each target type, i.e building wall, iron, wood and soil. The accuracy of the ETS reflector-less distance for the building wall target type is ± 0.002 m, the target type of iron is ± 0.002 m, the target type of wood is ± 0.001 m, and the target type of land is ± 0.002 m.Keywords: accuracy, distance, reflector-less, ETS Hi-Target ZTS 320R]]>
