Off-shore detection of tsunami waves is a critical component of an effective tsunami early warning system (TEWS). Even more critical is the off-shore detection of local tsunamis, namely tsunamis that strike coastal areas within minutes after generation. In this paper we propose new concepts for near-field tsunami early detection, based on innovative and up-to-date microwave remote sensing techn...

In order to acquire quick, high resolution, affordable aerial photographs, an unmanned helium filled airship system equipped with a non-metric digital camera was developed in Chinese Academy of Surveying and Mapping. To meet the potential demand of large scale photogrammetric applications, the non-metric digital camera was calibrated rigourously based on the bundle adjustment with additional pa...

SDL is a system design language that is being promoted for the development of reliable systems. In this paper, we apply SDL to capture design solutions to well-known mechanisms found in reliable systems a watchdog and a heartbeat for reuse. In particular, we present a methodology to augment system reliability step-by-step, and define and apply generic design solutions for reliable systems expre...