Lossless and lossy data compression

available technology

Air-delivered monocoque submersible vehicle system

An air-delivered submersible vehicle system has a monocoque-construction shell made from a fiber-reinforced plastic material selected from the group consisting of thermoplastics and thermoset plastics. The shell is equipped with a wing kit so that it can be deployed from an aircraft and fly through...
available technology

Attitude estimation using ground imagery

Vehicle attitude is estimated relative to a ground surface over which the vehicle is traveling. An actual image of the ground surface over which the vehicle is traveling is compared with stored or predicted model images of the ground surface. The model images have corresponding known vehicle...
available technology

Auto-focus for circular synthetic aperture sonar

A method of focusing fully-coherent circular synthetic aperture sonar (CSAS) imagery is provided. A k-space representation of the CSAS image is generated using the two dimensional Fast-Fourier Transform (FFT). Sub-aperture images are generated by windowing the k-space representation and applying...