Equalization method, equalization device and receiving system

An equalization device comprising:

• a phase rotation circuitry configured to input, from one or more subarrays including a set of the plurality of elements having a strong correlation in a Doppler frequency transition, received signals each received by each of the plurality of elements, and to perform, on each of the received signals as a reception signal, phase rotation processing of a phase rotation amount calculated for one of the subarrays to which one of the plurality of elements that has received the reception signal belongs;
• an equalizer configured to perform equalization processing on the reception signal subjected to the phase rotation processing;
• and
• a calculator configured to average phase amounts of the received signals each having been received by each of the plurality of elements belonging to same of the subarrays to calculate averaged phase amount for each of the subarrays, and to calculate the phase rotation amount for performing phase compensation by the phase rotation processing using the averaged phase amount for each of the subarrays.

A receiving system comprising:

• one or more subarrays including a set of a plurality of elements having a strong correlation in a Doppler frequency transition;
• a phase rotation circuitry configured to perform, on each of received signals received by the plurality of elements as a reception signal, phase rotation processing of a phase rotation amount calculated for one of the subarrays to which one of the plurality of elements that has received the reception signal belongs;
• an equalizer configured to perform equalization processing on the reception signal subjected to the phase rotation processing;
• and
• a calculator configured to average phase amounts of the received signals each having been received by each of the plurality of elements belonging to same of the subarrays to calculate averaged phase amount for each of the subarrays, and to calculate the phase rotation amount for performing phase compensation by the phase rotation processing using the averaged phase amount for each of the subarrays.