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ICRA
2007
IEEE
222views Robotics» more  ICRA 2007»
14 years 2 months ago
Autonomous Vision-based Landing and Terrain Mapping Using an MPC-controlled Unmanned Rotorcraft
In this paper, we present a vision-based terrain mapping and analysis system, and a model predictive control (MPC)based flight control system, for autonomous landing of a helicop...
Todd Templeton, David Hyunchul Shim, Christopher G...
LICS
2007
IEEE
14 years 2 months ago
First-Order and Temporal Logics for Nested Words
Nested words are a structured model of execution paths in procedural programs, reflecting their call and return nesting structure. Finite nested words also capture the structure ...
Rajeev Alur, Marcelo Arenas, Pablo Barceló,...
ICALP
2007
Springer
14 years 1 months ago
Regular Languages of Nested Words: Fixed Points, Automata, and Synchronization
Abstract. Nested words are a restriction of the class of visibly pushdown languages that provide a natural model of runs of programs with recursive procedure calls. The usual conne...
Marcelo Arenas, Pablo Barceló, Leonid Libki...
GLOBECOM
2006
IEEE
14 years 1 months ago
Low-Complexity Adaptive High-Resolution Channel Prediction for OFDM Systems
Abstract— We propose a low-complexity adaptive highresolution channel prediction algorithm for pilot symbol assisted orthogonal frequency division multiplexing (OFDM) systems. Th...
Ian C. Wong, Brian L. Evans
LICS
2006
IEEE
14 years 1 months ago
The Boundedness Problem for Monadic Universal First-Order Logic
We consider the monadic boundedness problem for least fixed points over FO formulae as a decision problem: Given a formula ϕ(X, x), positive in X, decide whether there is a unif...
Martin Otto