Precision geo-location at long range with multi-look lidar

Michael W. Roth; Andrew E. Scheck; Wendy W. Chiu; Kevin E. Murphy

doi:10.1117/12.609685

19 May 2005 Precision geo-location at long range with multi-look lidar (Invited Paper)

Michael W. Roth, Andrew E. Scheck, Wendy W. Chiu, Kevin E. Murphy

Proceedings Volume 5791, Laser Radar Technology and Applications X; (2005) https://doi.org/10.1117/12.609685
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

Precision geo-location (absolute accuracy of 20 cm or less) is required of high-resolution lidar data (1 m or less post spacing) for general surveying needs and high-quality visualization. Current open-loop airborne-hardware pointing-technology supports precision geo-location at short range (less than a few km). Precision geo-location at longer range can be achieved with more complex pointing-hardware but at substantial cost. This paper introduces the concept of multi-look lidar that has the potential for achieving long-range precision geo-location but at substantially reduced cost. In this concept, lidar data are collected at multiple look-angles that are consistent with Position-Dilution-Of-Precision (PDOP) requirements. The data are registered, triangulated, and block-adjusted with a dense set of self-generated control points. An analytic model is presented that shows that the error performance is independent of range. A flight test is described that validates the multi-look-lidar concept. Potential system-implementations are also described that can have minimal impact on hardware or conventional flight operations.

Citation Download Citation

Michael W. Roth, Andrew E. Scheck, Wendy W. Chiu, and Kevin E. Murphy "Precision geo-location at long range with multi-look lidar (Invited Paper)", Proc. SPIE 5791, Laser Radar Technology and Applications X, (19 May 2005); https://doi.org/10.1117/12.609685

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available