A system and method of correcting the trajectory of a hunting arrow is disclosed and described. The arrow can include a compensator coupled to a shaft of the arrow and the compensator has diameter that is larger than a diameter of the shaft of the arrow. A thickness of the compensator, which is measured as the difference in the diameter of the compensator and the diameter of the shaft of the arrow, is configured to enable a user to aim the arrow with a bow that has been sighted for a standard arrow.

A system and method of correcting the trajectory of a hunting arrow is disclosed and described. The arrow can include a compensator coupled to a shaft of the arrow and the compensator has diameter that is larger than a diameter of the shaft of the arrow. A thickness of the compensator, which is measured as the difference in the diameter of the compensator and the diameter of the shaft of the arrow, is configured to enable a user to aim the arrow with a bow that has been sighted for a standard arrow.

A sports-related measurement system that can include a forward facing camera, a global positioning satellite receiver, and the necessary data collection and processing capabilities to calculate the aerodynamic drag of a moving object. The data collected can include altitude, air pressure, air moisture content, temperature, and the like. The system can include a display for presenting data to the user and may also include memory for storage of data, photos, video, and the like. In some embodiments, the system may be configured as a bicycle computer adapted to mount on a bicycle.

A sports-related measurement system that can include a forward facing camera, a global positioning satellite receiver, and the necessary data collection and processing capabilities to calculate the aerodynamic drag and cyclist applied power of a moving object, such as a bicycle. The data collected can include altitude, air pressure, air moisture content, temperature, and the like. The system can include a display for presenting data to the user and may also include memory for storage of data, photos, video, and the like. In some embodiments, the system may be configured as a bicycle computer adapted to mount on a bicycle.

A sports-related measurement system that can include a forward facing camera, a global positioning satellite receiver, and the necessary data collection and processing capabilities to calculate the aerodynamic drag and cyclist applied power of a moving object, such as a bicycle. The data collected can include altitude, air pressure, air moisture content, temperature, and the like. The system can include a display for presenting data to the user and may also include memory for storage of data, photos, video, and the like. In some embodiments, the system may be configured as a bicycle computer adapted to mount on a bicycle.

Methods, systems and computer program products for radionavigation for swimmers are described. A mobile device configured to estimate a location using radio frequency signals can estimate a position of the swimmer when the mobile device is worn on a limb of the swimmer and periodically submerged. The mobile device can supply auxiliary information to a radionavigation subsystem to correct a navigation solution affected by limb motion of the swimmer and affected by the periodic submersion of the mobile device.

Methods, systems and computer program products for radionavigation for swimmers are described. A mobile device configured to estimate a location using radio frequency signals can estimate a position of the swimmer when the mobile device is worn on a limb of the swimmer and periodically submerged. The mobile device can supply auxiliary information to a radionavigation subsystem to correct a navigation solution affected by limb motion of the swimmer and affected by the periodic submersion of the mobile device.

Improvements regarding aspects of football are described, including with regard to tools and methods facilitating game and league play, as well as tools and methods for broadcast, including capture and presentation of broadcast for football.

Presented are intelligent electronic footwear and apparel with controller-automated features, methods for making/operating such footwear and apparel, and control systems for executing automated features of such footwear and apparel. A method for operating an intelligent electronic shoe (IES) includes receiving, e.g., via a controller through a wireless communications device from a GPS satellite service, location data of a user. The controller also receives, e.g., from a backend server-class computer or other remote computing node, location data for a target object or site, such as a virtual shoe hidden at a virtual spot. The controller retrieves or predicts path plan data including a derived route for traversing from the user's location to the target's location within a geographic area. The controller then transmits command signals to a navigation alert system mounted to the IES's shoe structure to output visual, audio, and/or tactile cues that guide the user along the derived route.

Presented are intelligent electronic footwear and apparel with controller-automated features, methods for making/operating such footwear and apparel, and control systems for executing automated features of such footwear and apparel. A method for operating an intelligent electronic shoe (IES) includes receiving, e.g., via a controller through a wireless communications device from a GPS satellite service, location data of a user. The controller also receives, e.g., from a backend server-class computer or other remote computing node, location data for a target object or site, such as a virtual shoe hidden at a virtual spot. The controller retrieves or predicts path plan data including a derived route for traversing from the user's location to the target's location within a geographic area. The controller then transmits command signals to a navigation alert system mounted to the IES's shoe structure to output visual, audio, and/or tactile cues that guide the user along the derived route.