IMPLEMENTATION OF THE COINCIDENCE FREQUENCY METER ON FPGA

Means of measuring various parameters and technical characteristics radio equipment have always occupied leading positions in science technology. Without an accurate definition the relevant values, it is impossible to build modern high-quality communication systems, radar, navigation ground satellite systems. In ultrasound diagnostics, which are used medicine, speed blood flow vessels studied by determining frequency reflected signal. At same time, necessary use high-speed measurement tools systems with active sensors telecommunication networks based on Internet Things For example, using signal, possible calculate not only coordinates, but also circular moving target. Modern research aimed at improving metrological indicators existing devices, particular developing new methods for correcting transformation channel, their main component. most digital meters built method counting number pulses N unknown period Tx that arrive input device during a calibrated time interval. All this leads increase requires additional hardware costs fast processing results. The coincidence belongs vernier promising when periodic signals. This paper points out shortcomings known On basis well-known coincidence, functional scheme 16-bit frequency, implemented FPGA from Intel (Altera), has been developed. developed meter dynamic range 96dB. Representation diagrams obtained Quartus Prime 18.0 automated design environment confirming operability method. An analytical dependence signal presented.