we3.l10 - many happy returns: reflections inspired by kiyo tomiyasu
TRANSCRIPT
IGARSS, Honolulu, Hawai’i
Wednesday 28 July 2010
R. Keith Raney
Many Happy Returns:
Reflections Inspired
by
Kiyo Tomiyasu
Many Happy Returns:
Reflections Inspired
by
Kiyo Tomiyasu
California Institute of Technology,
Bachelor of Science, 1940Kiyo: “I was a scared rabbit…”
Earthquake
seismometer ?
Married Eiko, 1947Computer
Laboratory
30 m
Harvard University,
PhD, 1942-1948
Columbia, MS Eng,
1941
Easter, 1946…
Harvard’s Mark I computer (IBM ASCC), 1944
Howard H. Aiken (and Grace Hopper)
Effective clock speed: 3 Hz !!
Dr. Kiyo Tomiyasu
Recipient of Numerous Awards and Honors, including
� President MTT-S (1960-61)
� Japanese American Citizen’s League Silver Medallion (1962)
� IEEE Fellow (1962), Life Fellow (1985)
� Director, IEEE Board of Directors (1985 – 86)
� Honorary Life AdCom Member: MTT-S (1973), GRSS (1999)
� General Electric Charles Proteus Steinmetz Award (1977)
� MTT-S Microwave Career Award, (1980)
� IEEE Centennial Medal (1984)
� Annual Prize, Telecommunications Association of Japan (1986)
� Outstanding Service Award, GRSS (1986)
� Distinguished Service Award, MTT-S (1987)
� California Institute of Technology Distinguished Alumni Award (2002)
� IEEE Heritage Circle, Thomas Alva Edison Medal (2010)
Dr. Kiyo Tomiyasu
Initiator of Awards and Philanthropy, including
� Annual Scholarships (with Eiko) at Cal Tech (1977 - )
� IEEE Foundation Fund: Harold Sobol Student Grant (MTT-S)
� IEEE Foundation Fund: Mike Takagi Student Prize (GRSS)
� Cal Tech Kiyo and Eiko Tomiyasu Endowed Professorship
� IEEE Kiyo Tomiyasu Technical Field Award (2002 - )
Recipient of Numerous Awards and Honors, including
� President MTT-S (1960-61)
� Japanese American Citizen’s League Silver Medallion (1962)
� IEEE Fellow (1962), Life Fellow (1985)
� Director, IEEE Board of Directors (1985 – 86)
� Honorary Life AdCom Member: MTT-S (1973), GRSS (1999)
� General Electric Charles Proteus Steinmetz Award (1977)
� MTT-S Microwave Career Award, (1980)
� IEEE Centennial Medal (1984)
� Annual Prize, Telecommunications Association of Japan (1986)
� Outstanding Service Award, GRSS (1986)
� Distinguished Service Award, MTT-S (1987)
� California Institute of Technology Distinguished Alumni Award (2002)
� IEEE Heritage Circle, Thomas Alva Edison Medal (2010)
Dr. Kiyo Tomiyasu
Initiator of Awards and Philanthropy, including
� Annual Scholarships (with Eiko) at Cal Tech (1977 - )
� IEEE Foundation Fund: Harold Sobol Student Grant (MTT-S)
� IEEE Foundation Fund: Mike Takagi Student Prize (GRSS)
� Cal Tech Kiyo and Eiko Tomiyasu Endowed Professorship
� IEEE Kiyo Tomiyasu Technical Field Award (2002 - )
Recipient of Numerous Awards and Honors, including
� President MTT-S (1960-61)
� Japanese American Citizen’s League Silver Medallion (1962)
� IEEE Fellow (1962), Life Fellow (1985)
� Director, IEEE Board of Directors (1985 – 86)
� Honorary Life AdCom Member: MTT-S (1973), GRSS (1999)
� General Electric Charles Proteus Steinmetz Award (1977)
� MTT-S Microwave Career Award, (1980)
� IEEE Centennial Medal (1984)
� Annual Prize, Telecommunications Association of Japan (1986)
� Outstanding Service Award, GRSS (1986)
� Distinguished Service Award, MTT-S (1987)
� California Institute of Technology Distinguished Alumni Award (2002)
� IEEE Heritage Circle, Thomas Alva Edison Medal (2010)
Laser Papers Published by Year
1
10
100
1000
10000
1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
Year
Nu
mb
er
of
pap
ers
Note
logarithmic
scale !!!
Townes,
Schawlow;
Gould
Laser Papers Published by Year
1
10
100
1000
10000
1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
Year
Nu
mb
er
of
pap
ers
Ruby laser
(Maiman)
Kiyo’s
inspiration
Laser Papers Published by Year
1
10
100
1000
10000
1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
Year
Nu
mb
er
of
pap
ers Kiyo: 5 reference
collections, IEEE
J. of Quantum
Electronics
Kiyo’s laser leadership at GE
1967
Plenum Press,
1968
3990 references,
organized into 27
subject groups,
annotated
A profitable
enterprise ?
Awarded in 1977
Charles P Steinmetz
1865 – 1923
Consulting engineer
to GE
“Father of AC”
X marks the spot
Kiyo Tomiyasu, Guest Editor
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. GE-19, NO. 2, APRIL 1981
Ambiguity Space Trade-offs
Doppler BW (Hz) BDop
Range window (sec) TR
Antenna beamwidth (rad) β
Radar range (m) R
Footprint velocity (m/s) V
Antenna aperture (m) D
Azimuth resolution (m) rAz
Synthetic aperture time (s) TA
Avoid ambiguities rule: BDop TR < 1 (underspread)
StripSAR
Ambiguity Space Trade-offs
Doppler BW (Hz) BDop
Range window (sec) TR
Antenna beamwidth (rad) β
Radar range (m) R
Footprint velocity (m/s) V
Antenna aperture (m) D
Azimuth resolution (m) rAz
Synthetic aperture time (s) TA
Avoid ambiguities rule: BDop TR < 1 (underspread)
Time-Bandwidth product rule*:
r Az =β R
T A BDop
ffffffffffffffffff
ScanSAR**StripSAR
Harger (1970); Bucknam (1975*); Claassen (1975), Moore (1976**, 1981),
and Lin (1979); Tomiyasu (1979, 1980, 1981); Luscombe (1988)
Harger (1970); Bucknam (1975*); Claassen (1975), Moore (1976**, 1981),
and Lin (1979); Tomiyasu (1979, 1980, 1981); Luscombe (1988)
Ambiguity Space Trade-offs
Doppler BW (Hz) BDop
Range window (sec) TR
Antenna beamwidth (rad) β
Radar range (m) R
Footprint velocity (m/s) V
Antenna aperture (m) D
Azimuth resolution (m) rAz
Synthetic aperture time (s) TA
Avoid ambiguities rule: BDop TR < 1 (underspread)
Time-Bandwidth product rule*:
Now substitute for BDop to get a new fundamental
azimuth resolution vs coverage rule:
T R
T A
fffffffβ R
r Az
fffffff
< 1
T 0A =β R
V
ffffffff
r 0Azt
D
2
fffff
n T 0A
r 0Az
n
ffffffff
T 0A
n
ffffffff
AND n T R
n r0Az
T A
r Az
r Az =β R
T A BDop
ffffffffffffffffff
ScanSAR**SpotSARStripSAR
Harger (1970); Bucknam (1975*); Claassen (1975), Moore (1976**, 1981),
and Lin (1979); Tomiyasu (1979, 1980, 1981); Luscombe (1988)
Harger (1970); Bucknam (1975*); Claassen (1975), Moore (1976**, 1981),
and Lin (1979); Tomiyasu (1979, 1980, 1981); Luscombe (1988)
RADARSAT-1 Antenna
�Slotted waveguide antenna
�15-m width (azimuth)
�1.5-m height (elevation)
�32 horizontal WGs
�Each WG center-fed
�Phase and amplitude control
�Selectable elevation (range)
directivity and beamshape
ElevationAzimuth