HPIRHigh Powered Illuminator Radar
HPIRHigh Probability of Intercept Receiver
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References in periodicals archive ?
After the fires smoldered and burned out the peat horizon, new ash horizons (Cpir) formed up to 5 cm deep; they formed over peat charry horizons (Hpir, 2-3 cm) and pyrogenic muck peat horizons (Ha,pir, 2-3 cm).
Its activities include high probability of intercept receiver (HPIR) programs, avionic interface systems and solid state ELM programs.