CLSA NALS - California Land Surveyors Association

MONDAY (8:30 AM - 10 AM)
California Real Time Network (CRTN)
What is the CRTN and how do I use it?
This presentation will cover the California Spatial Reference Center (CSRC) California Real Time Network (CRTN). Presenters
will discuss the CGPS network and infrastructure, CSRS published station coordinates, future expansion plans
and California NGS CORS stations. The presenters will also cover how to connect to CRTN for RTK surveying and describe
some various GNSS hardware and configurations as well as recommendations for RTK GNSS surveying utilizing
CRTN.
About The Speakers
Rich Maher, PLS is a professional land surveyor with over twenty years of experience practicing in
California. As the owner of KDM Meridian, over the past 12 years he has provided professional land
surveying and mapping services in the public works sector, including numerous projects requiring the
establishment of survey control through GNSS static and real-time methods. He regularly provides
training and education in best practices in static and real-time GNSS surveying through his mentorship
of employees at KDM Meridian and consulting support to other local firms and surveyors. As a consultant
to the licensing board of California he has participated in all phases of development and execution
of the California PLS exam. He is currently the secretary of the Orange County Joint Professional
Practices Committee and the secretary of the Executive Committee of the California Spatial Reference
Center.
Dave Olander, PLS is a professional land surveyor and has been employed with Caltrans District 11
(San Diego/Imperial County) for over 20 years. He has worked in every capacity of Field Land Surveying
work that Caltrans offers, throughout District 11. Currently he manages the District’s geodetic
control and special projects. Additionally, he participates in various statewide panels charged with
development and modification of Caltrans Survey standards, procedures and equipment issues.
MONDAY (10:30 AM - 12 PM)
NGS Update
The mission of the National Oceanic and Atmospheric Administration’s (NOAA) National Geodetic Survey (NGS) is “to
define, maintain and provide access to the National Spatial Reference System (NSRS) to meet our nation’s economic,
social, and environmental needs.” NSRS is the nation’s system of latitude, longitude, elevation, and related data, models
and tools, which provides a common, consistent, and accurate spatial reference system for a broad spectrum of users and
applications. Technological GNSS developments as well as user requirements and demand have resulted in extensive efforts
to maintain and modernize the NSRS. These changes are all designed to improve the accuracy and accessibility of
the NSRS, to the benefit of all geospatial professions and activities.This presentation will describe the current status of the
NSRS and will include information about the NGS network of GNSS Continuously Operating Reference Stations (CORS),
the Online Positioning User Service (OPUS) utilities, and the online retrieval and updating options for geodetic control
data. The current NAD83(2011) epoch 2010.00 datum realization and the corresponding geoid model (GEOID12A) will
be described. Preparations are well underway for a major NSRS modernization makeover, to be realized in about a decade
through a new generation of horizontal and vertical datums. Demonstrations of several interactive newer versions
of NGS software will be given, including DSWorld, Vdatum (now does SPC conversions), NADCON, HTDP, and Translev
for submitting Reset BM data.
About The Speakers
Marti Ikehara has been the California Geodetic Advisor for nearly 15 years, discussing the importance of datum tags and
epoch dates in this geologically active state. She has also overseen nearly a dozen Height Modernization projects, and
provided seminars about the relation between geodetic and tidal datums. Prior experience includes 18 years as a groundwater
hydrologist with the US Geological Survey in Honolulu and Sacramento.
William Stone is the NOAA/National Geodetic Survey’s (NGS) Southwest Region Geodetic Advisor. He assists the geospatial
community throughout Arizona, Nevada, New Mexico and Utah—including public- and private-sector surveyors,
GIS professionals, engineers, and earth scientists—with proper application of the National Spatial Reference System.
Stone has been with NGS since 1989, and he previously worked for the Department of the Navy and the Defense Mapping
Agency. He has a BA in Physics from Bowdoin College and an MS in Physical Oceanography from the Scripps Institution
of Oceanography. He lives in Santa Fe, NM.
CLSA
NALS