Abstract: A reversible wrist and thumb support is formed of a sleeve of resiliently stretchable material and includes an optionally detachable thumb support coupled to the sleeve. The thumb support includes a plurality of removable battens formed of a semi-rigid material and disposed along the posterior of a wearer's thumb. A resiliently deformable support pad is disposed on an underside of the splint and a removable stiffening semi-rigid batten that optionally includes padded surfaces, is disposed in a pocket on the top side of the support. The reversible wrist and thumb support may be worn on either the wearer's left or right hand, and the battens need not be removed when the reversible wrist and thumb support is turned inside-out.

Abstract: A target tracking method uses sensor(s) producing target signals subject to positional and/or angular bias, which are updated with sensor bias estimates to produce updated target-representative signals. Time propagation produces time-updated target states and sensor positional and angular biases. The Jacobian of the state dynamics of a target model produces the state transition matrix for extended Kalman filtering. Target state vector and bias covariances of the sensor are time propagated. The Kalman measurement residual is computed to produce state corrections, which are added to the time updated filter states to thereby produce (i) target state updates and (ii) sensor positional and angular bias updates.