BROADBAND SIGNAL SEARCH AND TRACKING DEVICE Russian patent published in 2006 - IPC H04B1/10 H04L7/00 

FIELD: data transfer over radio communication channels.

SUBSTANCE: newly introduced in proposed device designed for use in broadband communication systems, primarily in radio communication systems immune to jamming and malicious interference are controlled copy shift shaping circuit whose inputs are connected to pseudorandom sync sequence copy shaping unit, counter, and switch; output of controlled copy shift shaping circuit is connected to series-interconnected multiplier, integrator, amplitude detector, maximum choice circuit, switch, memory and subtracting devices, and variable-ratio divider. Divider inputs are connected to standard oscillator and discriminator through switch and its output, to search devices. Upon completion of search uncertainty zone remains wherein "home" signal occurs. However, these devices do not incorporate provision for "home" signal indication. After that signal tracking process is conducted in remaining zone of ambiguity.

EFFECT: enhanced noise immunity at pull-in phase.

1 cl, 7 dwg