Use of nonlinear operations in digital systems for identification of location signals

The location systems are subject to a lot of natural and artificial disturbances. One of the main problems is the search for a solution to increase reliability and speed of this system work. We propose to use signals with linear frequency modulation connected with code manipulation. Basing on this idea, system for identification code sequences carried by wideband signals (chirp signals), has been worked out. Identification of chirp signals and noise-like code is realized with the use of matching filtration. Matching filtration is based on simple and parallel operations, which allow its realization with the use of neural network. The influence of nonlinear operations on convolution results on improving the recognition of noise-like codes and wide band signals was also studied in this work.