Hybrid amplitude/phase comparison direction finding system

Details Hybrid amplitude/phase comparison direction finding system Hybrid amplitude/phase comparison direction finding system

1995-03-29

1996-07-30

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

342174, G01S 504

Patent

active

055416080

ABSTRACT:
A hybrid amplitude/phase comparison direction finding system for aircraft, employing a unique calibration system to compensate for tolerance variations in the antennas. The calibration system utilizes a programmable read only memory (PROM) for each antenna pair, wherein calibration data from pre-measured antenna patterns of the associated antennas are stored. The calibration data preferably includes measured relative amplitude (electromagnetic field strength) and phase data, as a function of frequency and angle from a common reference plane, for the associated antenna pair. This calibration data is stored in a PROM which is preferably disposed within an assembly which includes the antenna pair. A system processor can then retrieve the calibration data during system operation, whereupon angle of arrival measurements can be performed with improved accuracy.

REFERENCES:
patent: 3824595 (1974-07-01), Hall
patent: 3964065 (1976-06-01), Roberts et al.
patent: 4788548 (1988-11-01), Hammerquist
patent: 5321410 (1994-06-01), Hipp et al.

Affiliated with

Also associated with

Rating

Hybrid amplitude/phase comparison direction finding system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hybrid amplitude/phase comparison direction finding system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid amplitude/phase comparison direction finding system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1662833