TPU
TPU turns up in 2 fields: hydrography, electronics. Here is what it means to the people in each one.
TPU in hydrography
Total propagated uncertainty: the combined estimate of how far each sounding could be from the truth, at 95 percent confidence.
Total propagated uncertainty is computed for every sounding by combining the error budgets of each contributor: positioning, attitude, heading, timing, lever arms, sound speed, draft, squat, tide or ellipsoid separation and the sonar itself. It splits into a horizontal part (THU) and a vertical part (TVU), each compared with the limits of the survey order. Gridding algorithms use it to weight soundings, so a sloppy uncertainty model degrades the final surface as well as the report.
"TPU's blowing past the limit on the outer beams, so cap the swath at 55 degrees for this area."
TPU in electronics
Tensor Processing Unit, an application-specific integrated circuit designed to accelerate machine learning workloads.
Tensor Processing Unit is an ASIC tailored specifically for the matrix multiplication operations central to neural networks. Unlike general-purpose CPUs or GPUs, TPUs strip away unnecessary control logic to pack massive arrays of multiply-accumulate units, drastically increasing throughput and power efficiency for AI inference and training.
"The edge device uses a low-power TPU to handle the image recognition locally without hitting the cloud."