Digital center line filter

G - Physics – 01 – S

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01S 7/285 (2006.01) H03H 17/02 (2006.01)

Patent

CA 2193435

A center-line filter for a radar receiver (50) is a cascade of an analog filter (54A) and a digital filter (58A). The purpose of the filter cascade is to filter out all but a single line of a pulsed spectrum. The signal is passed through the analog filter, and then over-sampled by an analog-to-digital convertor (56A). A sharp cutoff FIR filter is used as the digital filter (58A) to eliminate the remaining undesired lines. Since the analog filter already has the correct matched filter characteristic in the passband, the digital filter passband is deliberately wider and unsymmetrical. After digital filtering, the filter output is decimated by a decimation processor (60A) to provide a desired output data rate.

Filtre à raie centrale pour récepteur radar (50), associant en cascade un filtre analogique (54A) et un filtre numérique (58A). La cascade de filtres vise à conserver une seule raie d'un spectre d'impulsions. Le signal traverse le filtre analogique, puis est suréchantillonné par un convertisseur analogique-numérique (56A). Un filtre itératif à coupure nette est utilisé comme filtre numérique (58A) pour éliminer les raies non désirées qui restent. Comme le filtre analogique possède déjà la caractéristique correcte de filtre adapté dans la bande passante, la bande passante du filtre numérique est délibérément plus large et asymétrique. Après le filtrage numérique, la sortie du filtre est décimée par un processeur de décimation (60A) afin de produire un débit d'information de sortie désiré.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Digital center line filter 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 center line filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital center line filter will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1923205

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.