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This paper presents a study of the consistency of the values used as reference for the hardware delays of GPS P1 and P2 for calibration in the TAI network. The inter-signal biases dP1-dP2 are computed from the pseudorange measurements, after applying an ionospheric delay correction, and then compared to the calibrated values. It is shown that the differences between the computed dP1-dP2 and the calibrated...
We report on coherent synthesis of outputs from two ultra-broadband optical parametric amplifiers; their timing is locked to sub-30-as by a balanced cross-correlator. Synthesised pulses have octave-spanning (500–1000 nm) spectra and nearly single-cycle 3.8-fs duration.
Voice over IP (VoIP) and high quality video streaming becomes an alternative to conventional telephony and TV service in many locations by way of ongoing deployment of WLAN hotspots. The newly proved IEEE 802.11e QoS enhancement standard will be a proper solution of delay demanding for real-time multimedia applications, while the existing auto rate fallback (ARF) link adaptation scheme, designed to...
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