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Chester E Stromswold

from Nashua, NH
Age ~91
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Also known as:
Chester D Stromswold
Phone and address:
48 Cox St, Nashua, NH 03064
(603) 882-0805
Related to:
Shirley M Saunders, 97Lynne E Schibbelhute, 70Tracy L Mcgee, 59Scott Saunders, 67
Connected to:
Kristen Stromsvold, 47Jon M Stronach, 42Sara M Stronck, 46Charles J Stronconi, 71Alan Strong, 40Albert Strong, 44Angie L Strong, 61Ann M Strong, 65Ashlee A Strong, 39Bertha Strong, 82

Chester Stromswold Phones & Addresses

  • 48 Cox St, Nashua, NH 03064 (603) 882-0805
  • 3267 201St Ave, Bellingham, MN 56212 (320) 568-2185
  • Highland Park, NJ
  • 48 Cox St, Nashua, NH 03064

Industries

Electrical/Electronic Manufacturing

Resumes

Resumes

Chester Stromswold Photo 1

Retired

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Location:
Nashua, NH
Industry:
Electrical/Electronic Manufacturing

Publications

Us Patents

Compressive Receiver With Frequency Expansion

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US Patent:
6366627, Apr 2, 2002
Filed:
Sep 28, 1983
Appl. No.:
06/536592
Inventors:
John T. Apostolos - Merrimack NH
Chester E. Stromswold - Nashua NH
Assignee:
BAE Systems Information and Electronic Systems Integration, Inc. - Nashua NH
International Classification:
H04B 169
US Classification:
375350, 455303, 455307, 455308, 375130
Abstract:
A compressive receiver including a dispersive delay line ( ) and a frequency translator ( ) is preceded by signal compressors ( ) that record the incoming signals at one speed and play them back at a higher speed. This increases the frequency spread and provides greater frequency resolution at the output of the receiver.

Feed-Forward Error Correction For Sandaps And Other Phase-Locked Loops

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US Patent:
46880038, Aug 18, 1987
Filed:
Oct 3, 1986
Appl. No.:
6/914897
Inventors:
Chester E. Stromswold - Nashua NH
Assignee:
Sanders Associates, Inc. - Nashua NH
International Classification:
H03L 700
US Classification:
331 25
Abstract:
A signal source in the general form of a phase-locked loop (12, 20, 22, and 24) has its output fed to a phase modulator (32) controlled in response to the output of the phase-locked-loop phase detector (20). This provides feed-forward error correction that gives the signal source a faster response than a conventional phase-locked-loop arrangement would have.

Acquisition System Employing Circular Array

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US Patent:
46332570, Dec 30, 1986
Filed:
Nov 14, 1983
Appl. No.:
6/551664
Inventors:
John T. Apostolos - Merrimack NH
Robert P. Boland - Wilmington MA
Chester E. Stromswold - Nashua NH
Assignee:
Sanders Associates, Inc. - Nashua NH
International Classification:
G01S 504
G01S 316
G06G 719
US Classification:
342445
Abstract:
A system for indicating the direction of a source of radio waves received by a circular antenna array (12) includes a Butler matrix (18) that receives the array outputs and feeds the resultant matrix outputs to correction circuits (22) whose transfer functions are the inverses of the direction-independent factors of antenna patterns generated by antenna elements driven at relative phases that advance around the array at rates that complete an integral number of cycles in one circuit of the array. The resultant corrected signals are fed to a compressive receiver (26), which accordingly generates an output on an output port whose position indicates the direction of the source of the signal.

Real-Time Wide-Band Compressive-Receiver System

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US Patent:
53432070, Aug 30, 1994
Filed:
Sep 30, 1986
Appl. No.:
6/913436
Inventors:
Chester E. Stromswold - Nashua NH
John T. Apostolos - Merrimack NH
Assignee:
Lockheed Sanders, Inc. - Nashua NH
International Classification:
G01S 740
G01R 23175
US Classification:
342192
Abstract:
The input ports (18) of an imaging compressive receiver (20) receive from a tapped delay line (16) progressively delayed versions of a received signal s(t). Because of the delays, a signal component in the received signal appears at least at one of the input ports (18) of the compressive receiver (20) at a time when the compressive receiver (20) will detect it, even if the undelayed version occurs during a time at which the compressive receiver (20) would ordinarily be insensitive to it. Since the compressive receiver (20) is an imaging device, it provides relatively isolated channels between its input terminals (18) and its output terminals (38). The phase relationships between the delays in these channels remain constant despite changes in environmental factors, however, because the various channels are embodied in a common two-dimensional delay line.

Fm/Chirp Detector/Analyzer And Method

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US Patent:
47332379, Mar 22, 1988
Filed:
Jan 7, 1985
Appl. No.:
6/689524
Inventors:
John T. Apostolos - Merrimack NH
Chester E. Stromswold - Nashua NH
Assignee:
Sanders Associates, Inc. - Nashua NH
International Classification:
G01S 736
US Classification:
342 13
Abstract:
A device for determining the frequency range and chirp rate of chirp radars or other sources of frequency-modulated signals includes a compressive receiver (16, 22, 24) for time-compressing single-frequency signals and a discriminator (26) for generating an output that represents the instantaneous frequency of the compressive-receiver output. For narrow-band signals, the frequency-modulated components in the output of the compressive receiver do not last long enough to cause a response from the discriminator (26). When the input of the compressive receiver is a chirp signal, on the other hand, the resultant compressive-receiver output lasts long enough to cause a discriminator response, and its time of occurrence and rate of frequency change are indications of the frequency range and chirp rate of the compressive-receiver input. The discriminator (26) accordingly generates an output whose slope is an indication of the chirp rate of the compressive-receiver input.

Compressive Receiver

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US Patent:
43051596, Dec 8, 1981
Filed:
Jan 23, 1978
Appl. No.:
5/871297
Inventors:
Chester E. Stromswold - Nashua NH
John T. Apostolos - Manchester NH
Robert P. Boland - Malden MA
Walter J. Albersheim - Wayban MA
Assignee:
Sanders Associates, Inc. - Nashua NH
International Classification:
H04B 116
H04B 1700
US Classification:
455226
Abstract:
The envelope detector of a compressive receiver is replaced with either a Fourier Transform device or a demodulator such that the output of the dispersive delay line utilized in the receiver is processed to yield the spectrum of the incoming signals and/or the modulation impressed on the incoming signals, thus to permit rapid identification of a signal and its source. In order to permit spectral analysis and/or demodulation of many signals over wide bandwidths, an especially wide bandwidth dispersive delay line is utilized along with a sweep-to-sweep phase coherent variable frequency oscillator.

Method And Apparatus For Increasing The Sweep Rate Of A Linearly Swept Frequency Oscillator

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US Patent:
43365116, Jun 22, 1982
Filed:
Apr 9, 1979
Appl. No.:
6/027953
Inventors:
Chester E. Stromswold - Nashua NH
Robert T. Martel - Derry NH
John Apostolos - Malden MA
Robert P. Boland - Nashua NH
Assignee:
Sanders Associates, Inc. - Nashua NH
International Classification:
H03B 2300
US Classification:
331178
Abstract:
The sweep rate of a linearly swept frequency generator is increased while maintaining strict linearity by artificially increasing the number of zero axis crossings of the output signal from a linearly swept voltage controlled oscillator over those that would naturally occur during a linear sweep. This permits an increased sampling rate which, in turn, permits the oscillator sweep rate to be increased without loss of accuracy. Increasing the number of zero axis crossings is accomplished by introducing phase shifts in the output of the oscillator at calculated sampling times with phase shifting being accomplished indirectly by heterodyning the swept oscillator output with the output from a fixed oscillator whose output signal is phase shifted by discrete amounts during the frequency sweep. Only a small number of phase shifts need be introduced due to the discovery of certain symmetries of phase when sweeping through a frequency range.

Spread-Spectrum Detection System For A Multi-Element Antenna

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US Patent:
46566422, Apr 7, 1987
Filed:
Apr 18, 1984
Appl. No.:
6/601453
Inventors:
John T. Apostolos - Merrimack NH
Chester E. Stromswold - Nashua NH
Assignee:
Sanders Associates, Inc. - Nashua NH
International Classification:
H04B 1500
US Classification:
375 1
Abstract:
In a spread-spectrum direction-finding system, the outputs of the several antenna elements (10a-d) are progressively translated in frequency by a chirped local oscillator (14) and mixers (12a-d) and applied to a two-dimensional dispersive filter (18), which time compresses the results of single-frequency components in the antenna-element outputs to narrow pulses. Limiters (24a-d) remove any strong narrow-band components that are compressed by the dispersive delay line (18) so that further processing to detect a spread-spectrum signal is not degraded by the presence of narrow-band signals. The use of a common two-dimensional delay line (18) to provide the time compression avoids the need to maintain phase tracking among a plurality of separate parallel one-dimensional dispersive delay lines.
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Chester E Stromswold from Nashua, NH, age ~91 Get Report