Radar apparatus

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

343 172PC, G01S 728, G01S 1328

Patent

active

045624380

ABSTRACT:
A radar transmitter transmits a group of pulses as shown at I of FIG. 2, the group consisting of first short pulse of a frequency f.sub.1 transmitted during time interval t.sub.1 to t.sub.2. A second, longer pulse of frequency f.sub.2 is transmitted during time interval t.sub.2 and t.sub.3 and a third, short pulse of frequency f.sub.1 is transmitted during time interval t.sub.3 to t.sub.4. The return from a close range small target is shown at II and the return from a large source of clutter or another large target at a slightly greater range is shown at III. The return from the larger target or source of clutter is so strong as to saturate the receiver during the time interval t.sub.7 to t.sub.12 and thus the return from the second short pulse during period t.sub.9 to t.sub.10 is obscured as shown at IV. However, since a short pulse is also transmitted before the long pulse its return, at time interval t.sub.5 to t.sub.6, is not obscured. In other situations where a large source of clutter or a large target is at a slightly closer range than the small target of interest the return during interval t.sub.5 to t.sub.6 will be obscured but the return of the second pulse during time interval t.sub.9 to t.sub.10 will not be obscured. In this way it is ensured that at least one of the two short pulses is detected.

REFERENCES:
patent: 3945011 (1976-03-01), Glasgow
patent: 4096478 (1978-06-01), Chavez
patent: 4136341 (1979-01-01), Mulder et al.

LandOfFree

Say what you really think

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

Rating

Radar apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Radar apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radar apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1026924

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