Jim Cannistra, vice president of Sanborn, a photogrammetric mapping and GIS industry based in Pelham, New York, announced that the company has been contracted to perform update mapping services for New York City’s GIS landbase, referred to as “NYCMap.” Cannistra also announced that Sanborn was contracted to provide high-resolution digital orthophoto imagery of the World Trade Center site, and was hired to perform precision surveying to support two NYC tunneling projects.
The update mapping services contract is the second part of a two-phase project that Sanborn is doing for the city. The initial phase of the project involved updating existing digital orthophoto imagery and planimetric and topographic data for Manhattan, Staten Island, and parts of the Bronx and Brooklyn. The second phase involves updating existing planimetric and topographic data for the Bronx, Brooklyn, and Queens. As part the first phase of the project, Sanborn produced “true orthophotos” for all of Manhattan Island and the surrounding waterfronts in the other boroughs of the city. The highly detailed and highly accurate Digital Terrain Model (DTM) produced in support of the “true orthophoto” production is an important byproduct for three-dimensional modeling.
Government agencies use NYCMap as their key GIS basemap, and rely on it extensively for homeland security, infrastructure management, and environmental applications. In a separate project, Sanborn was hired to fly new photography and to produce high-resolution digital orthophotos for the World Trade Center site and its surrounding areas. The ¼-foot pixel resolution orthophotos will be used for future design-scale mapping projects in association with redevelopment of the WTC site. The update mapping and digital orthophoto projects are being managed and overseen by Hunter College’s Center for the Analysis and Research of Spatial Information (CARSI), under the direction of Dr. Sean Ahearn and by the Department of Information Technology and Telecommunications (DOITT), under the direction of Alan Leidner.
Also in New York City, Sanborn was contracted by Schiavone Construction to perform precision geodetic surveying for the Con Edison 1st Avenue Steam Tunnel and 36th Avenue shaft construction. In two successive campaigns, Sanborn established a network containing surface and tunnel control points using its Gyromat 2000 and other high precision surveying instruments. With a rich tradition of mapping dating back to 1866, Sanborn offers a full suite of GIS and mapping services to federal, state, and local governments, as well as private companies. The company’s core services include data acquisition, photogrammetric mapping, and data conversion. The company has offices in the United States and abroad.