What Does Broadband Field Refer to in Imaging Technologies?

[faryafada]

Is broadband field, a wave that contains a range of wavelengths? I can not find a good definition for it

 

[Baluncore]

In what context is the term “broadband field” used?
Broadband is a wide bandwidth or wide variation in frequency. Field might mean electromagnetic field.

 

[faryafada]

In what context is the term “broadband field” used?
Broadband is a wide bandwidth or wide variation in frequency. Field might mean electromagnetic field.

In a far field imaging system

 

[Baluncore]

Broadband 3D imaging can be done with EM radiation from VLF to X-ray, or with acoustic signals from subsonic seismic imaging through to ultrasonic examination of materials.

“Broadband field” may refer to the 3D volume that is being imaged using a broadband signal.

As the bandwidth of the radiation increases, so does the volume of the imaged 3D field.
http://en.wikipedia.org/wiki/White_...n_between_spectral_width_and_coherence_length

Can you provide text or a link to an example of the use of "broadband field".

 

[faryafada]

http://journals.aps.org/prb/abstract/10.1103/PhysRevB.89.115403
Please read the abstract, A finite-sized ultrathin metallic slab is used to encode subwavelength details of the broadband field radiated by an object.

Broadband 3D imaging can be done with EM radiation from VLF to X-ray, or with acoustic signals from subsonic seismic imaging through to ultrasonic examination of materials.

“Broadband field” may refer to the 3D volume that is being imaged using a broadband signal.

As the bandwidth of the radiation increases, so does the volume of the imaged 3D field.
http://en.wikipedia.org/wiki/White_...n_between_spectral_width_and_coherence_length

Can you provide text or a link to an example of the use of "broadband field".