In a method for determining orientation of an object, raw image data of the sky is recorded using a sky polarimeter. One or more of Stokes parameters (S0, S1, S2), degree of linear polarization (DoLP), and angle of polarization (AoP) are calculated from the image data to produce a set of processed images. Last known position and time data of the object are obtained, and a known Sun azimuth and elevation are calculated using the last known position and time data. Roll and pitch of the object are found, and the roll and pitch data are used to find a zenith in the processed images. The yaw/heading of the object is determined using the difference between a polarization angle at the zenith and a calculated Sun azimuth.

A network of scopes, including one or more lead scopes and one or more follower scopes, is provided to allow the respective scopes to track the same presumed target. A lead scope locates a target and communicates target position data of the presumed target to the follower scope. The follower scope uses the target position data and its own position data to generate electronic control signals for use by follower scope to make position movements so as to re-position the follower scope from its current target position to move towards the target position defined by the target position data received from the lead scope. At least the second scope is mounted to, or integrated into, a vehicle, which uses the target position data to move to a new location so as to allow the second scope to better view the target.

A network of scopes, including one or more lead scopes and one or more follower scopes, is provided to allow the respective scopes to track the same presumed target. A lead scope locates a target and communicates target position data of the presumed target to the follower scope. The follower scope uses the target position data and its own position data to generate electronic control signals for use by follower scope to make position movements so as to re-position the follower scope from its current target position to move towards the target position defined by the target position data received from the lead scope. At least the second scope is mounted to, or integrated into, a vehicle, which uses the target position data to move to a new location so as to allow the second scope to better view the target.

A network of scopes, including one or more lead scopes and one or more follower scopes, is provided to allow the respective scopes to track the same presumed target. A lead scope locates a target and communicates target position data of the presumed target to the follower scope. The follower scope uses the target position data and its own position data to generate electronic control signals for use by follower scope to make position movements so as to re-position the follower scope from its current target position to move towards the target position defined by the target position data received from the lead scope. At least the second scope is mounted to, or integrated into, a vehicle, which uses the target position data to move to a new location so as to allow the second scope to better view the target.

A network of scopes, including one or more lead scopes and one or more follower scopes, is provided to allow the respective scopes to track the same presumed target. A lead scope locates a target and communicates target position data of the presumed target to the follower scope. The follower scope uses the target position data and its own position data to generate electronic control signals for use by follower scope to make position movements so as to re-position the follower scope from its current target position to move towards the target position defined by the target position data received from the lead scope. At least the second scope is mounted to, or integrated into, a vehicle, which uses the target position data to move to a new location so as to allow the second scope to better view the target.

Disclosed are a system and method for undersea navigation with a maritime vehicle or diver undersea navigation device. A sensor interface receives navigation information from a plurality of sensors used to sense navigation information. A processor receives the navigation information from the sensor interface. The processor converts the navigation information into graphics data. The processor provides the graphics data to a graphics processing unit to render a navigation board image on a display of the maritime vehicle or diver undersea navigation device. The navigation board image comprises a plurality of navigation indicators to indicate the navigation information and a compass comprising a plurality of rotational orientation indicators to indicate rotational orientation information. The rotational orientation indicators include a plurality of heading direction indicators, a current heading indicator, and a plurality of pitch indicators, where the plurality of pitch indicators indicate pitch information.

The present invention provides portable navigation systems, devices, methods and software for provision of navigation indications to a user in a GPS-denied environment, the system including at least one portable device, including a navigation Application (App) adapted to provide the user with navigational instructions and at least one interface component to provide at least one direction-specific instruction of movement to the user, wherein the App comprises an embedded algorithm adapted to fragment a continuous line course on a map associated with a two or three-dimensional route, the algorithm constructed to provide instructions to the user, responsive to a current position of the device associated with the route, wherein the at least one device is adapted to provide commands from the algorithm to activate the at least one vibrational components, responsive to a position of the device.

A method for calibrating a surgical device is provided. The method includes acquiring first data including a position and/or an orientation of a first object disposed on the surgical device at a first location; acquiring second data including a position and/or an orientation of a second object disposed on the surgical device at a second location; determining third data including a position and/or an orientation of the first object relative to the second location; and determining a position and/or an orientation of the second object relative to the second location based at least in part on the first data, the second data, and the third data.

A diagnostic device includes an acquisition unit, first and second measurement units, a generation unit, and a guidance unit. The acquisition unit accepts a produced sound as input and acquires sound information. The first measurement unit measures a distance from a standard position. The second measurement unit measures a change in orientation from a standard state. The generation unit generates appropriate position information, the appropriate position information being the distance from the standard position to the diagnostic device measured by the first measurement unit, and the change in orientation from the standard state measured by the second measurement unit. The guidance unit uses the appropriate position information to guide the diagnostic device to an appropriate position when acquiring the sound information.

A multi-purpose bayonet knife assembly mounts to the distal end of a firearm barrel to augment the firearm as a pike and detaches to operate as a knife, while also providing integrated utilitarian components having minimal moving parts. The assembly comprises a hilt, a cross guard, and a blade. The hilt has an integral flint and a snap-on hook. The hook detachably couples to the firearm barrel, and also serves to open a bottle. A sleeve houses the hilt. The blade is defined by a longitudinally extending edge defined by: a first serrated edge, a second serrated edge, an angled bevel, and a double-sided blade tip oriented about 30 above the longitudinally extending edge of blade. Blade includes metric and imperial scales, time dial, and compass. Blade forms a dowel hole, nut socket holes, and a longitudinally extending groove. The metallic composition of the blade serves as an antenna.