DOES STATE-OF-THE-ART EQUIPMENT SOLVE ALL MAPPING PROBLEMS? A CASE STUDY OF THE LOS ANGELES REGION IMAGERY ACQUISITION CONSORTIUM (LAR-IAC) PROJECT.

摘要

The paper describes the specific terrain conditions, the selected methodologies, and solutions to meet the accuracy requirements and delivery schedules for the Los Angeles Region Imagery Acquisition Consortium (LAR-IAC) project under which digital ortho aerial imagery, digital terrain datasets (from LiDAR), and contour data will be provided to all consortium members. This project ranks as one of the most ambitious mapping projects in the US undertaken today. The project specifications called for 4 inch digital ortho coverage with 2 foot contours of 2,898 square miles and 1 foot orthos with 5 foot contours over 1,056 square miles. Image acquisition of over 60,000 images was performed by 3 Z/I DMC systems and LiDAR data was acquired by 2 Leica ALS 50 sensors resulting in a 7 TB data set. The LAR-IAC's data management, storage, and distribution to consortium members are also discussed.