674
September 2016
PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING
datum transformations referred to herein are contained in
the ASPRS Manual of Photogrammetry, 5th edition, 2004.
U
pdate
The Turkish National Fundamental GPS Network (TNFGN
– TUTGA) has been established in 2001 with some stations
re-observed due to the 1999 earthquake. There are about 682
stations computed in ITRF 2005.0. The Turkish National
Vertical Control Network (TNVCN-99) was established with
the adjustment of 243 lines of 25,680 points with a total
length of 29,316 km. The current geoid model is TG-09, and
the General Command of Mapping is working on a plan for
height modernization with a 1-cm Turkish geoid model (
2007-
2011 Term Report of Turkish National Geodesy Commission
,
General Command of Mapping
, Ankara, 2011). Thanks to
Cole Billeaud for research assistance.
The contents of this column reflect the views of the author, who is
responsible for the facts and accuracy of the data presented herein.
The contents do not necessarily reflect the official views or policies of
the American Society for Photogrammetry and Remote Sensing and/
or the Louisiana State University Center for GeoInformatics (C
4
G).
This column was previously published in
PE&RS
.
Too young to drive the car? Perhaps!
But not too young to be curious about
geospatial sciences.
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standing and use of spatial data for the betterment of humankind.
The Foundation provides grants, scholarships, loans and other
forms of aid to individuals or organizations pursuing knowledge of
imaging and geospatial information science and technology, and
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CORRECTIONS
In the August 2016 issue of
PE&RS
, two papers were
printed with minor errors.
Future Landsat Data Needs at the Local and State
Levels: An AmericaView Perspective
Ramesh Sivanpillai and Russell G. Congalton
and
Automatic Extraction of
Road Networks from GPS Traces
Jia Qiu and Ruisheng Wang
Corrected versions of the articles are available at www.
asprs.org.
