Using X-band weather radar measurements to monitor the integrity of digital elevation models for synthetic vision systems

Steven D. Young; Maarten Uijt de Haag; Jonathon Sayre

doi:10.1117/12.489000

23 September 2003 Using X-band weather radar measurements to monitor the integrity of digital elevation models for synthetic vision systems

Steven D. Young, Maarten Uijt de Haag, Jonathon Sayre

Author Affiliations +

Proceedings Volume 5081, Enhanced and Synthetic Vision 2003; (2003) https://doi.org/10.1117/12.489000
Event: AeroSense 2003, 2003, Orlando, Florida, United States

Abstract

Synthetic Vision Systems (SVS) provide pilots with displays of stored geo-spatial data representing terrain, obstacles, and cultural features. As comprehensive validation is impractical, these databases typically have no quantifiable level of integrity. Futher, updates to the databases may not be provided as changes occur. These issues limit the certification level and constrain the operational context of SVS for civil aviation. Previous work demonstrated the feasibility of using a real-time monitor to bound the integrity of Digital Elevation Models (DEMs) by using radar altimeter measurements during flight. This paper describes an extension of this concept to include X-band Weather Radar (WxR) measurements. This enables the monitor to detect additional classes of DEM errors and to reduce the exposure time associated with integrity threats. Feature extraction techniques are used along with a statistical assessment of similarity measures between the sensed and stored features that are detected. Recent flight-testing in the area around Juneau, Alaska Airport (JNU) has resulted in a comprehensive set of sensor data that is being used to assess the feasibility of the proposed monitor technology. Initial results of this assessment are presented.

Citation Download Citation

Steven D. Young, Maarten Uijt de Haag, and Jonathon Sayre "Using X-band weather radar measurements to monitor the integrity of digital elevation models for synthetic vision systems", Proc. SPIE 5081, Enhanced and Synthetic Vision 2003, (23 September 2003); https://doi.org/10.1117/12.489000

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