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Nathan Freedman

age ~114

from Brighton, MA

Nathan Freedman Phones & Addresses

  • 28 Wallingford Rd, Brighton, MA 02135 • 617-7823747

Resumes

  • Nathan Freedman Photo 1

    Student At Stetson University

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  • Location:
    Greater Boston Area
  • Industry:
    Management Consulting

Us Patents

  • Voice-Modulated Transponder System

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  • US Patent:
    3931622, Jan 6, 1976
  • Filed:
    May 22, 1973
  • Appl. No.:
    5/362717
  • Inventors:
    Nathan Freedman - West Newton MA
  • Assignee:
    Raytheon Company - Lexington MA
  • International Classification:
    G01S 956
    H03K 708
    H03K 710
  • US Classification:
    343 65R
  • Abstract:
    A voice-modulated transponder system comprising an interrogator and a light-weight transponder. In the described embodiment, the interrogator is airborne and the transponder is located on the ground. The interrogator can locate the position of the transponder and simultaneously therewith two-way voice communication between the interrogator and transponder is possible.
  • Am-Fm Laser Radar

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  • US Patent:
    4812035, Mar 14, 1989
  • Filed:
    Nov 3, 1986
  • Appl. No.:
    6/929686
  • Inventors:
    Nathan Freedman - West Newton MA
    Wayne H. Keene - South Natick MA
    Albert V. Jelalian - Bedford MA
  • Assignee:
    Raytheon Company - Lexington MA
  • International Classification:
    G01C 308
  • US Classification:
    356 5
  • Abstract:
    A laser radar system wherein a beam of continuous wave (CW) electromagnetic energy is generated with frequency modulation (FM) and amplitude modulation (AM) being imposed thereon to produce an amplitude and frequency modulated, continuous wave beam of energy. The AM-FM CW beam is transmitted toward a selected target, portions of the transmitted beam being reflected by the target and received along with portions of the transmitted beam reflected by unselected targets and atmospheric clutter. A first signal is produced in response to the frequency modulation on the received beam portions reflected by the selected target, such first signal representing the approximate range of the selected target and substantially resolving the selected target from unselected targets and atmospheric clutter and having a relatively long ambiguous range interval. A second signal is produced in response to the amplitude modulation on the received beam portions reflected by the selected target, the second signal representing the accurate range of the selected target within a relatively short ambiguous range interval. The second signal provides poor resolution between the selected target and the unselected targets and atmospheric clutter.
  • Recirculating Delay Line Radar Performance Monitor

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  • US Patent:
    5262787, Nov 16, 1993
  • Filed:
    Feb 10, 1993
  • Appl. No.:
    8/019323
  • Inventors:
    William J. Wilson - Wenham MA
    David G. Armstrong - Brunswick ME
    Roy E. Byington - Sudbury MA
    Nathan Freedman - West Newton MA
    Neil F. Lacey - Framingham MA
    Fritz A. Gross - Weston MA
  • Assignee:
    Raytheon Company - Lexington MA
  • International Classification:
    G01S 7I0
  • US Classification:
    342173
  • Abstract:
    A radar performance monitor (RPM) receives a transmitted radar signal from a radar system being monitored and couples the signal to a recirculating loop comprising a SAW delay line in order to produce a series of simulated radar return signals of equal amplitude and by using the same frequency as the received radar signal providing the frequency falls within a predetermined bandwidth of the SAW delay line. The simulated radar return signals are displayed at the radar system and used to evaluate the operation and calibration of a transmitter and the sensitivity and calibration of a transmitter and the sensitivity and calibration of a receiver in the radar system. The radar performance monitor is actuated at the option of a radar operator.
  • Am-Fm Laser

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  • US Patent:
    4846571, Jul 11, 1989
  • Filed:
    Nov 3, 1986
  • Appl. No.:
    6/929572
  • Inventors:
    Albert V. Jelalian - Bedford MA
    Wayne H. Keene - South Natick MA
    Nathan Freedman - West Newton MA
  • Assignee:
    Raytheon Company - Lexington MA
  • International Classification:
    G01C 308
    G01P 336
  • US Classification:
    356 5
  • Abstract:
    A laser is provided for generating a beam of continuous wave (CW) electromagnetic energy having a nominal frequency and amplitude. The frequency of the CW beam is modulated (FM) from the nominal frequency. The amplitude of the frequency modulated beam is modulated (AM) from the nominal amplitude to produce an amplitude and frequency modulated continuous wave (AM-FM CW) beam of energy. A local oscillator beam is produced from the frequency modulated CW beam. The AM-FM CW beam is directed for reflection by a target. The target-reflected return portions of the AM-FM CW beam are combined with the frequency modulated local oscillator beam to produce a beat frequency signal which is subsequently detected, the beat frequency signal having a frequency component representative of the range of the target. Such arrangement, when implemented in a radar system, provides such radar system with accurate target range measurements unambiguous over large ranges. Further, such AM-FM CW signal provides high resolution between target-reflected return signals of such AM-FM CW signal and returns from near-field atmospheric clutter.
  • Hybrid Pulse Compression System

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  • US Patent:
    4167737, Sep 11, 1979
  • Filed:
    Jan 9, 1978
  • Appl. No.:
    6/868107
  • Inventors:
    Nathan Freedman - West Newton MA
  • Assignee:
    Raytheon Company - Lexington MA
  • International Classification:
    G01S 9233
  • US Classification:
    343 172PC
  • Abstract:
    A code generation and receiving system for a large bandwidth Doppler tolerant signal for use by communication and radar systems includes a set of delay lines for producing discrete phase shifts on a carrier signal. One delay line with relatively large delays between taps thereon produces a set of quadratic phase shifts approximating a frequency sweep. A second delay line with relatively small delays between taps thereon produces a binary phase code.

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Classmates

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Nathan Freedman

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Schools:
Frank V. Thompson Middle School Dorchester MA 1945-1949
Community:
Ruthie Morris, Patricia Callahan
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Nathan Williams (Freedman)

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Schools:
King Kamehameha III Elementary School Lahaina HI 1980-1984
Community:
Ernette Asato, Lisa Okuda, Mindy Cappal, Leilani Re
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Nathan Freedman

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Schools:
Venice High School Venice CA 1971-1975
Community:
Dennis Ferguson, Patti Ames, Ileine Nichols
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King Kamehameha III Eleme...

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Graduates:
Nathan Freedman (1980-1984),
Lalaini Waikiki (1980-1984),
Michael McCartney (1972-1976)

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