Bedeutung der Frequenz- und Zeitmessung in der Schweizer Luftwaffe
by Hans
Jucker, Switzerland 2007/2008
German/English
language 1-30/31-45 ( pdf, 6.5 MB)
Please
notice, that Hans Jucker has upgraded his paper recently. Which is the reason
that there exists now a jump in page-numbering for page 30, because I had to
paste the new pages onto the already existing ones. The size of his original
version should otherwise have exceeded 10 MB!
Notice that after pdf page 31 the text has changed to English language!
Hans Jucker is
on this subject likely ' the expert' in Switzerland.
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Hans Jucker discusses:
Frequency and related time meassurement practised in the Swiss Air Force; Among
many topics is dealt with : the famous US BC221 frequency meter, including
a photo and principle diagram; VHF communications of their Air Force; SCR522,
BC624/625; CR1A quartz; DH-100 MK6; STR9 - STR9X; Röntgengoniometern (X-ray
diffraction); Quartz cuts: AT - BT - SC .. ; HC6/U; KTA .. ; General Radio
Frequency Standard GR 1105A - 1105 - 1102-A - 1101-A - 1107-A -
1109-A - 1106-A; 1106-B - description of the outline of its
internal quartz standard of 100 kHz - Synchron-Uhr - 1100-A - R&S CKB Zeitdifferenz Messgerät; Hewlett Packard frequency counter HP5245;
Stressmomente im Resonator - Wanderung von Ionen im Kristall - Ablösung feinster
Kristallteilchen vom schwingenden Resonator; General Radio Time and Frequency
Standard 1120-AH ...; Zeitnormalausrüstung für das Luftverteidigungssystem
Florida (Swiss Air Force) ...; Aufbereitung der Systemzeit aus
Normalzeit-Emissionen; DCF77; HBG auf 75 kHz; Zeitcodierung der HBG und DCF77
Emissionen; Feldstärken und Genauigkeit der Normalzeit-Emissionen; Verfügbarkeit
der Systemzeit; Synchronisierungskonzept für die Systemzeit aus
Normalzeit-Emissionen; Phaselockloop; akkumulierte Zeitfehler
Δt; aging rate/Tag ...; Zeitbasis der Typ 8600 der
Firma Oscilloquartz S.A.; Laufzeitkonstanz 2 x 10-11 ...; BVA
(Quartz) Rasonator + block diagram; Korrektur des Offset Fehlers; Flying
Clock; GPS und Rubidium Standard für die Zeitnormale des ...;
Rudium-Standard Ausrüstung in geöffneten Zustand (colour view of the Rubidium-gas resonator!);
RMS cicle jitter; sin U/U envelope prf ... ; MTI maximum allowable frequency
drift 20 kc/sec²; Stalo; clutter motion; short time stability of coho; AVAR
short time stability of Allan variance; MTI systems for radars with
amplifier chain transmitters; MTI improvement factor limitation due to radar
instability is ... ; stability requirements for the radar microwave frequency
generation chain ...
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