FREQUENCY MODULATED CONTINUOUS WAVE RADAR BASED SYSTEM FOR DETECTION OF AN OBJECT AND GENERATION OF PLOTS HOLDING RADIAL VELOCITY DATA

摘要

A Frequency Modulated Continuous Wave, FMCW, radar system is provided. The radar system comprises one or more antennas configured to transmit and receive FMCW radar wave signals for scanning for objects within a full circular detection coverage range, and processing circuitry configured to provide scan data based on transmitted and received FMCW radar signals and azimuth position of the antenna(s), and to generate full data type radar plots based on obtained scan data. The processing circuitry is further configured to select irregular type radar plots having velocity data representing positive and negative radial velocities within an observed radial velocity range, and to generate object tracks or unmanned aerial vehicle, UAV, tracks based on irregular type radar plots. For the plots ofa generated object/UAV track, the processing circuitry is configured to determine an outer energy sum being the sum of return energies for range cells representing positive and negative radial velocity signals within a first and a second outer velocity range outside a center range of the observed radial velocity range, to determine a center energy sum being the sum of return energies for range cells representing radial velocity signals within the center range of the observed radial velocity range, and/or a total energy sum being the total sum of return energies of range cells representing all radial velocity signals of the observed radial velocity range. Furthermore, the processing circuitry may be configured to classify the object/UAV track as a real UAV track or non-real UAV track based at leastpartly on a comparison of the determined outer energy sum with the determined center energy sum and/or with the determined total energy sum.