Abstract: A gradient sensing probe system, and method of using same, including a sensing segment which includes a plurality of sensors, a support structure, and an electrical interface having first and second faces. The system further includes a housing, a power source, and an electronics package including a controller and disposed within the housing. The sensing segment is configured to measure external gradients and to exchange data with the controller. The power source is connected energetically to provide power to the sensing segment and the electronics package, and is controlled by the controller.

Abstract: A gradient sensing probe system, and method of using same, including a sensing segment which includes a plurality of sensors, a support structure, and an electrical interface having first and second faces. The system further includes a housing, a power source, and an electronics package including a controller and disposed within the housing. The sensing segment is configured to measure external gradients and to exchange data with the controller. The power source is connected energetically to provide power to the sensing segment and the electronics package, and is controlled by the controller.

Abstract: Low-power, wireless, underwater communication devices with communication capabilities without requiring precision underwater navigation. In one aspect, the systems and methods described herein relate to a transmitter which wirelessly transmits data underwater using light-emitting diodes and a receiver which wirelessly receives data emitted from light-emitting diodes using a photodiode. In one embodiment the light-emitting diodes are blue and in another embodiment the light-emitting diodes are red. The receiving photodiode can, for example, be a silicon photodiode. In yet other embodiments the transmitter transmits data to the receiver according to a standard protocol, for example, the IRDA protocol. In one embodiment the transmitter can communicate with receivers as far as 5 to 10 meters away from the transmitter.