This article introduces Python's decimal module, explains its importance for high‑precision calculations, and provides step‑by‑step examples covering basic creation, arithmetic operations, precision control, rounding, formatting, division, comparisons, advanced contexts, and custom rounding modes.
The article explores why absolute‑precision periodic tasks are hard to achieve, compares Java Timer and ScheduledExecutorService with Linux kernel mechanisms such as DelayedWorkQueue, futex, pthread_cond_timedwait, and high‑resolution hrtimers, and explains the underlying data structures and timing‑wheel algorithms.
This article explains the fundamentals of Ultra‑Wideband (UWB) technology, its high‑precision characteristics, system architecture, TDOA‑based positioning principle, and typical industrial use cases, illustrating why UWB is a leading solution for centimeter‑level IoT location tracking.
This article systematically explains the key technologies behind mobile and vehicle navigation positioning, covering sensor fusion, AHRS, map‑matching algorithms based on hidden Markov models, Kalman filtering, and the evolution toward lane‑level and centimeter‑level accuracy for autonomous driving.
