Apparatuses, systems and methods for obtaining information about electromagnetic energy emitted from the earth, such as for locating an interference source on earth

摘要

An observation satellite is used for obtaining information about electromagnetic energy emitted from the earth. The observation satellite orbits the earth in an orbit having an inclination larger than 90° and smaller than 270°. Further, the observation satellite comprises at least one receiving antenna, the at least one receiving antenna having a receiving pattern directed towards the earth, and suitable for receiving electromagnetic energy in the radio frequency range as the observation satellite is orbiting relative to the surface of the earth. The observation satellite also comprises a transmitter configured for at least one of: (i) retransmitting the received electromagnetic energy, (ii) transmitting information representing the received electromagnetic energy, and (iii) transmitting information derived from the received electromagnetic energy. The invention also relates to systems and methods therefor.

主权项

1. A satellite for obtaining information about electromagnetic energy emitted from a source, or from sources, on the earth,
the satellite orbiting the earth in an orbit having an inclination larger than 90° and smaller than 270°; and the satellite comprising:
at least two receiving antennas, each of the at least two receiving antennas
having a receiving pattern directed towards the earth, andsuitable for receiving electromagnetic energy in the radio frequency range as the satellite is orbiting relative to the surface of the earth, andthe at least two receiving antennas forming receiving patterns being such that a same signal received by the at least two receiving antennas is received differently; anda transmitter configured for at least one of:
retransmitting at least part of the received electromagnetic energy,transmitting information representing at least part of the received electromagnetic energy; andtransmitting information derived from at least part of the received electromagnetic energy.