Gregory S. Parsons

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This paper introduces an ultrasonic communication system for biotelemetry in extremely shallow waters (under 3 meters). This application domain is notable for its tight constraints on device size, weight, and energy. We have developed this communication system as a fundamental component of the RaPTEX toolchain, which aims to simplify the prototyping and(More)
Assuming that intraorbital volume is a space defined by the orbital walls, and that intraorbital contents represent a space occupied by soft tissues, changes between volume and contents will result in movement of the globe in usually a forward (exophthalmic) or backward (enophthalmic) direction. An understanding of the phenomenon is important if the(More)
Many real-time (RT) embedded systems can benefit from a memory hierarchy to bridge the processor/memory speed gap. These RT embedded systems usually utilize a cacheless architecture to avoid the time variability which complicates the timing analysis essential for RT systems. In the absence of a cache the burden of allocating the data objects to the memory(More)
This paper introduces an ultrasonic communication system for biotelemetry in extremely shallow waters (under 3 meters). This application domain is notable for its tight constraints on device size, weight, and energy. We have developed this communication system as a fundamental component of the RaPTEX toolchain, which aims to simplify the prototyping and(More)
This paper introduces the RaPTEX toolchain and its use for the rapid prototyping and evaluation of an underwater ultrasonic communication system. The main goal of our RaPTEX toolchain is to bridge this gap between the need for embedded communication systems on low-cost low-energy hardware and the difficulty in their design. To this end, we have developed(More)
This paper introduces the RaPTEX toolchain and its use for the rapid prototyping and evaluation of an underwater ultrasonic communication system. The main goal of our RaPTEX toolchain is to bridge this gap between the need for embedded communication systems on low-cost low-energy hardware and the difficulty in their design. To this end, we have developed(More)