An apparatus and corresponding method for coherent hybrid electromagnetic
field imaging of a target, where an energy source is used to generate a
propagating electromagnetic beam, an electromagnetic beam splitting means
to split the beam into two or more coherently matched beams of about
equal amplitude, and where the spatial and temporal self-coherence
between each two or more coherently matched beams is preserved. Two or
more differential modulation means are employed to modulate each two or
more coherently matched beams with a time-varying polarization,
frequency, phase, and amplitude signal. An electromagnetic beam combining
means is used to coherently combine said two or more coherently matched
beams into a coherent electromagnetic beam. One or more electromagnetic
beam controlling means are used for collimating, guiding, or focusing the
coherent electromagnetic beam. One or more apertures are used for
transmitting and receiving the coherent electromagnetic beam to and from
the target. A receiver is used that is capable of square-law detection of
the coherent electromagnetic beam. A waveform generator is used that is
capable of generation and control of time-varying polarization,
frequency, phase, or amplitude modulation waveforms and sequences. A
means of synchronizing time varying waveform is used between the energy
source and the receiver. Finally, a means of displaying the images
created by the interaction of the coherent electromagnetic beam with
target is employed.