Patent ID: 6903674
Filing Date: 2005-06-07
Classification: G01S

Abstract:
1. A procedure for generation and emission of jamming signals directed toward a laser-based measuring system that determines distance and/or speed of targets by sending laser signals to a target from a laser transmitter and receiving, at a laser detector, the laser signals reflected from the target, said procedure comprising the step of: emitting jamming signals in a direction of the laser-based measuring system, the jamming signals being generated by a plurality of light emitting diodes (LEDs) each operating within a wavelength range of the laser transmitter of the measuring system to be jammed, said LEDs being driven by at least two signal generators which produce periodical signals and at least two of these periodical signals differing from each other by a master frequency, whereby the composite of the periodical signals is characterized by a non-constant period.