Passive radiometric imaging device and corresponding method

Passive radiometric imaging method for scanning a scene, said method comprising the steps of:

• detecting radiation emitted in a predetermined spectral range from a spot of said scene and for generating a radiation signal from said detected radiation,
• moving of the spot, from which the radiation is detected, to various positions,
• controlling the movement of said spot so that the spot moves from one position to another position after a random time interval, and
• processing the radiation signals detected from the spot at said various positions and for reconstructing an image of said scene by applying compressive sensing.

Passive radiometric imaging device for scanning a scene, said device comprising:

• a radiation detection means for detecting radiation emitted in a predetermined spectral range from a spot of said scene and for generating a radiation signal from said detected radiation,
• a spot movement means for effecting a movement of the spot, from which the radiation is detected, to various positions,
• a control means for controlling said spot movement means to effect the movement of the spot from one position to another position after a random time interval, and
• a processing means for processing the radiation signals detected from the spot at said various positions and for reconstructing an image of said scene by applying compressive sensing.