Abstract: To improve the seamless navigation ability of an integrated Global Positioning System (GPS)/inertial navigation system in GPS-denied environments, a hybrid navigation strategy called the ...

Abstract: This article presents a variant of sigma-point Kalman filters family called square-root spherical simplex unscented Kalman filter for online Bayesian recursive estimation of the state and ...

SAN ANTONIO — When visitors come to San Antonio for the first time, they are often told there are three "must see" places they should visit: The Alamo, the Riverwalk and Mi Tierra Café. The downtown ...

This historic Munger Place Prairie Four-Square once looked like the house all the kids avoid at Halloween. Scary doesn’t even begin to describe the dilapidated home, and I think most of the neighbors ...

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Once a century, a very special day comes along. That day is today — 9/16/25. Pi Day (3/14) often comes with sweet treats; Square Root Day (4/4/16 or 5/5/25, for example) has a certain numerical rhyme.