Electromagnetic wave processing system

An electromagnetic wave processing system mounted on a spacecraft including a plurality of antennas, the electromagnetic wave processing system comprising:

• a measurement apparatus configured to process measurement signals of electromagnetic waves acquired by the plurality of antennas;
• an attitude detection apparatus configured to detect an attitude of the spacecraft;
• a rotation control apparatus configured to control rotation of the spacecraft;
• and
• a calculation apparatus,
• wherein the rotation control apparatus rotates the spacecraft about a center of gravity around a plurality of rotational axes with respect to an inertial space,
• wherein the measurement apparatus performs measurement at a plurality of attitudes changed by the rotation, and
• wherein the calculation apparatus calculates an intensity distribution of electromagnetic waves acquired by the plurality of antennas using an interference waveform obtained by multiplying measurement signals obtained from different antennas in the measurement signals obtained at the plurality of attitudes.