Communications: directive radio wave systems and devices (e.g. – Clutter elimination
Patent
1996-06-10
1998-03-31
Eldred, J. Woodrow
Communications: directive radio wave systems and devices (e.g.,
Clutter elimination
342196, 342146, G01S 1389
Patent
active
057343470
ABSTRACT:
This invention generates a radar analog of the optical hologram by recording a radar image in the range/doppler plane, the range/azimuth plane, and/or the range/elevation plane according to the type and application of the radar. The invention embodies a means of modifying the range doppler data matrix by scaling, weighing, filtering, rotating, tilting, or otherwise modifying the matrix to produce some desired result. Specific examples are, removal of known components of clutter in the doppler frequency spectrum by filtering, and rotating/tilting the reconstructed image to provide a view not otherwise available. In the first instance, a reconstructed image formed after filtering the Fourier spectrum would then show a clutter free replication of the original range/PRI object space. The noise `floor` can also be modified such that only signals in the object space that produce a return signal above the `floor` will be displayed in the reconstructed image.
REFERENCES:
patent: 3400363 (1968-09-01), Silverman
patent: 3842251 (1974-10-01), Powers, Jr. et al.
patent: 4602257 (1986-07-01), Grisham
patent: 4924235 (1990-05-01), Fujisaka et al.
patent: 5087917 (1992-02-01), Fujisaka et al.
patent: 5191344 (1993-03-01), Moreira
patent: 5341141 (1994-08-01), Frazier et al.
patent: 5563601 (1996-10-01), Cataldo
Carroll Leo R.
Eldred J. Woodrow
LandOfFree
Digital holographic radar does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital holographic radar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital holographic radar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-55248