US5016256A
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US
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Spread spectrum intercept apparatus and method
Assignee: Individual
•
Filing: 1989-10-17
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Granted: 1991-05-14
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Expires: 2009-10-17
Abstract
Abstract An apparatus for detecting an intercept signal having spread spectrum modulation, having a first antenna, a second antenna, a first channelizer, a second channelizer, parametric encoders, a spread hopper processor and a nonspread hopper processor. The first antenna outputs a first sample of the intercept signal. The second antenna outputs a second sample of the intercept signal. The first channelizer channelizes the spectrum of the first sample of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively. The second channelizer channelizes the spectrum of the second sample of the intercept signal into a second plurality of spectrum segments having the same center frequencies and bandwidths as the first plurality of spectrum segments. Each spectrum segment of the second plurality of spectrum segments has a corresponding segment signal, respectively. The parametric encoders measure a corresponding plurality of frequencies and times of arrival of each of the first plurality of segment signals, respectively, and estimates a plurality of segment phase angles between corresponding segment signals having the same center frequency, of the first and second plurality of segment signals from the first and second channelizers, respectively.
Inventors
- 👤 Clarence H. Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:47
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/69; H04B1/713
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
83 words
An apparatus for detecting an intercept signal having spread spectrum modulation, comprising: a first antenna for outputting the intercept signal; first means for channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; a parametric encoder for measuring a corresponding plurality of frequencies of each of the first plurality of segment signals, respectively; and means for generating from the plurality of frequencies a frequency estimate of the intercept signal.
Claim 2
Independent Claim
83 words
An apparatus for detecting an intercept signal having spread spectrum modulation, comprising: a first antenna for outputting the intercept signal; first means for channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; a parametric encoder for measuring a corresponding plurality of frequencies of each of the first plurality of segment signals, respectively; and means for generating from the plurality of frequencies a frequency estimate of the intercept signal.
Claim 3
Dependent Claim
58 words
The apparatus for detecting an intercept signal having spread spectrum modulation as set forth in claim 1 further comprising: means for measuring a corresponding plurality of times of arrival of each of the first plurality of segment signals; and means for generating from the plurality of times of arrival, a time of arrival estimate of the intercept signal.
Claim 4
Independent Claim
88 words
An apparatus for detecting an intercept signal having spread spectrum modulation, comprising: a first antenna for outputting the intercept signal; first means for channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; a parametric encoder for measuring a corresponding plurality of times of arrival of each of the first plurality of segment signals; and means for generating from the plurality of times of arrival a time of arrival estimate of the intercept signal.
Claim 5
Independent Claim
88 words
An apparatus for detecting an intercept signal having spread spectrum modulation, comprising: a first antenna for outputting the intercept signal; first means for channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; a parametric encoder for measuring a corresponding plurality of times of arrival of each of the first plurality of segment signals; and means for generating from the plurality of times of arrival a time of arrival estimate of the intercept signal.
Claim 6
Independent Claim
83 words
An apparatus for detecting an intercept signal having spread spectrum modulation, comprising: a first antenna for outputting the intercept signal; a channelizer for channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; a parametric encoder for measuring a corresponding plurality of frequencies of each of the first plurality of segment signals, respectively; and means for generating from the plurality of frequencies a frequency estimate of the intercept signal.
Claim 7
Independent Claim
83 words
An apparatus for detecting an intercept signal having spread spectrum modulation, comprising: a first antenna for outputting the intercept signal; a channelizer for channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; a parametric encoder for measuring a corresponding plurality of frequencies of each of the first plurality of segment signals, respectively; and means for generating from the plurality of frequencies a frequency estimate of the intercept signal.
Claim 8
Dependent Claim
59 words
The apparatus for detecting an intercept signal having spread spectrum modulation as set forth in claim 4 wherein: said parametric encoder measures a corresponding plurality of times of arrival of each of the first plurality of segment signals; and said generating means generates from the plurality of times of arrival, a time of arrival estimate of the intercept signal.
Claim 9
Independent Claim
88 words
An apparatus for detecting an intercept signal having spread spectrum modulation, comprising: a first antenna for outputting the intercept signal; a channelizer for channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; a parametric encoder for measuring a corresponding plurality of times of arrival of each of the first plurality of segment signals; and means for generating from the plurality of times of arrival a time of arrival estimate of the intercept signal.
Claim 10
Independent Claim
88 words
An apparatus for detecting an intercept signal having spread spectrum modulation, comprising: a first antenna for outputting the intercept signal; a channelizer for channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; a parametric encoder for measuring a corresponding plurality of times of arrival of each of the first plurality of segment signals; and means for generating from the plurality of times of arrival a time of arrival estimate of the intercept signal.
Claim 11
Independent Claim
89 words
An method using a parametric encoder for detecting an intercept signal having spread spectrum modulation, comprising the steps, using said parametric encoder, of: outputting from a first antenna the intercept signal; channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; measuring with said parametric encoder a corresponding plurality of frequencies of each of the first plurality of segment signals, respectively; and generating from the plurality of frequencies a frequency estimate of the intercept signal.
Claim 12
Independent Claim
89 words
An method using a parametric encoder for detecting an intercept signal having spread spectrum modulation, comprising the steps, using said parametric encoder, of: outputting from a first antenna the intercept signal; channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; measuring with said parametric encoder a corresponding plurality of frequencies of each of the first plurality of segment signals, respectively; and generating from the plurality of frequencies a frequency estimate of the intercept signal.
Claim 13
Dependent Claim
52 words
The method as set forth in claim 17 further comprising the steps of: measuring with said parametric encoder a corresponding plurality of times of arrival of each of the first plurality of segment signals; and generating from the plurality of times of arrival, a time of arrival estimate of the intercept signal.
Claim 14
Independent Claim
93 words
A method using a parametric encoder for detecting an intercept signal having spread spectrum modulation, comprising the steps, using said parametric encoder, of: outputting from an antenna the intercept signal; channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; measuring with said parametric encoder a corresponding plurality of times of arrival of each of the first plurality of segment signals; and generating from the plurality of times of arrival a time of arrival estimate of the intercept signal.
Claim 15
Independent Claim
93 words
A method using a parametric encoder for detecting an intercept signal having spread spectrum modulation, comprising the steps, using said parametric encoder, of: outputting from an antenna the intercept signal; channelizing the spectrum of the intercept signal into a first plurality of spectrum segments, with each spectrum segment having a corresponding segment signal, respectively; measuring with said parametric encoder a corresponding plurality of times of arrival of each of the first plurality of segment signals; and generating from the plurality of times of arrival a time of arrival estimate of the intercept signal.
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