Abstract: A human gesture tracking system includes a sensor device with at least one sensor unit, where the sensor unit is configured to measure at least one of position in three dimensions of a portion of an operator's limb and orientation in three dimensions of the portion of the operator's limb, a processor configured to receive information from the sensor device so as to determine orientation and position displacement in six degrees of freedom of the operator's limb, and an activator that is coupled to communicate with the processor and is further actuated by the operator to designate a start time and an end time in which position and orientation displacements of the portion of the operator's limb are determined by the processor. During system operation, the processor determines position and orientation displacements of the portion of the operator's limb in tracking sessions, each tracking session is defined as a time period between the start time and the end time as designated by the activator.

Abstract: An actuation and control system for a steering mechanism of a mobile vehicle includes a motor including a drive shaft that is rotatable in two opposing directions, a securing structure configured to be secured to the steering mechanism of the mobile vehicle, and a linking structure that couples the motor with the securing structure. The system is configured such that rotational motion of the drive shaft is imparted to the securing structure to facilitate control of the steering mechanism of the mobile vehicle. The system is relatively easy to assemble and install and in a mobile vehicle and can be used with a variety of different vehicles to facilitate remote and/or unmanned navigational control of a mobile vehicle.

Abstract: An actuation and control system for a steering mechanism of a mobile vehicle includes a motor including a drive shaft that is rotatable in two opposing directions, a securing structure configured to be secured to the steering mechanism of the mobile vehicle, and a linking structure that couples the motor with the securing structure. The system is configured such that rotational motion of the drive shaft is imparted to the securing structure to facilitate control of the steering mechanism of the mobile vehicle. The system is relatively easy to assemble and install and in a mobile vehicle and can be used with a variety of different vehicles to facilitate remote and/or unmanned navigational control of a mobile vehicle.

Abstract: A method and system for remote control of self-propelled vehicles includes a leader vehicle and at least one follower vehicle located behind the leader vehicle. The leader vehicle traverses a waypoint, determines a first set of GPS coordinates corresponding to the waypoint, and transmits the first set of GPS coordinates to the follower vehicle. The follower vehicle determines a second set of GPS coordinates corresponding to its own position and compares the first set of GPS coordinates to the second set of GPS coordinates. By controlling steering, drive and braking systems of the follower vehicle with a servo-actuator, the follower vehicle is guided toward the waypoint by minimizing the difference between the first and second sets of GPS coordinates. This process is repeated at a succession of waypoints such that the follower vehicle traverses the same course as the leader vehicle.

Abstract: The improved intensity modulator comprises a directional coupler with a single active coupling section with a fixed amount of coupling along with a single pair of electrodes for supplying a voltage-controlled mismatch in propagation constants. Two passively-biased coupling sections are connected in series with the active section, with the two passive sections combined being at least one coupling length long. The bias voltage of the two passive sections are independently varied to compensate for non-linearities by providing additional coupling. In addition to a DC bias voltage, the active coupling section is supplied with an RF signal which may propagate from its input end to its output, along with the optical signal, if a traveling wave electrode is used. Alternate embodiments provide temperature-induced drift compensation and reduction of chirping.