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Frequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly changing the carrier frequency among many frequencies occupying a large spectral band. The changes are controlled by a code known to both transmitter and receiver .
As a graduate student, Cabric's first project was to design a high-speed frequency-hopping system, which resulted in the fastest frequency-hopping system ever built. [ 4 ] Career
The system should be able to adjust the receiving method on each 42-byte packet. ... fast frequency hopping (SS-FFH) profile; IEC 61334-6:2000 A-XDR encoding rule ...
Have Quick (also HAVEQUICK, short HQ) is an ECM-resistant frequency-hopping system used to protect military aeronautical mobile (OR) radio traffic. Since the end of World War II , U.S. and Allied military aircraft have used AM radios in the NATO harmonised 225–400 MHz UHF band (part of NATO B band [ 1 ] ) for short range air-to-air and ground ...
Frequency agility is the ability of a radar system to quickly shift its operating frequency to account for atmospheric effects, jamming, mutual interference with friendly sources, or to make it more difficult to locate the radar broadcaster through radio direction finding.
The Pelena-1 (in Russian means "Shroud") is a Russian ground-based jamming system. Designed for jamming the AN/APY-2 radar , the primary component of the airborne warning and control system ( AWACS ), by automatically inducing a jamming frequency on radar carrier frequencies operating in the fast frequency hopping mode.
A multibit PLL offers fine frequency resolution and fast frequency hopping, together with lower phase noise and lower power consumption. It thus enhances the overall performance envelope of the PLL. The loop bandwidth can be optimized for phase noise performance and/or frequency settling speed; it depends less on the frequency resolution.
A synchronous digital system is one that is driven by a clock signal and, because of its periodic nature, has an unavoidably narrow frequency spectrum. In fact, a perfect clock signal would have all its energy concentrated at a single frequency (the desired clock frequency) and its harmonics.