Evaluation of a partial-band jammer with Gaussian-shaped spectrum against FH/MFSK

Since a rectangular spectrum is unrealizable, more realistic spectra such as those where a jammer uses a bandpass filter before amplifying the jamming noise are considered. A Gaussian-shaped filter is used to represent a class of bandpass filters. This is a more realistic shape than the ideal rectangular shape. In addition, it can be easily analyzed by a reasonable approximation, i.e. a Gaussian-shaped spectrum that is constant over each hopped M-ary signaling band. Numerical results indicate that such a Gaussian-shaped partial-band noise jammer has nearly the same effects as an ideal rectangular-shaped partial-band noise jammer with an equivalent bandwidth