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JosephKK

Fred Bloggs posted to sci.electronics.design:

wrote:
In sci.physics Fred Bloggs wrote:

wrote:

TRR - Target range radar; tracked the target in range in ECM,
frequency agile to defeat ECM, elevation and azimuth provided by
the ECM source

How exactly did that mode work, tracking target range but using
EW interference for az/el? How could you not know your az/el if
you're getting detections from your pulse?

The TRR was slaved in azimuth and elevation to the TTR.

The TTR had the required hardware to track in azimuth and
elevation.

When jammed, the TTR tracked the jamming source.

The TRR provided only range information.

The TTR was X band.

The TRR was Ku band and frequency agile to get around the
jamming.

Frequency agile Ku band transmission? What kind of tube did they
use for that? Wondering why the Ku band could not just take a
handoff and do the tracking on its own, must not have been a
stable track. What kind of cheap ill-begotten antenna gets you
less angular resolution at Ku band than X-band?

Sure, chirp radar is over 40 years old. TWT comes to mind. They
may have had a problem figuring out CSRO for Ku band at the time.
A bent horn?