RADAR DETECTOR HAVING A MULTI-PERIOD PERIDOCITY VALIDATOR AND METHOD THEREFOR
First Claim
1. A radar detector having a multi-period periodicity validator, said radar detector comprising:
- a pulse sensor configured to sense a received pulse;
a first-period detector coupled to said pulse sensor and configured to detect a first period;
a second-period detector coupled to said pulse sensor and configured to detect a second period, said second period being different from said first period; and
a control element, coupled to said first-period detector and to said second-period detector, said control element being configured to determine if a pulse sensed at said pulse sensor exhibited a period matching one of said first and second periods.
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Accused Products
Abstract
A radar detector (10) includes a first period detector (76, 122), a second period detector (96, 120) and a third period detector (86, 124) within a multi-period periodicity validator 38. The first period detector (76, 122) detects radar pulses exhibiting one-half of an expected pulse period (48), the second period detector (96, 120) detects radar pulses exhibiting the expected pulse period (48), and the third period detector (86, 124) detects radar pulses exhibiting twice the expected pulse period (48). A plurality of pulse-train records (40) can simultaneously track a plurality of possible pulse trains. A control element (84, 136, 138) accounts for missing pulses and corrects the expected pulse period when missing pulses have caused the expected pulse period to be inaccurate.
15 Citations
22 Claims
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1. A radar detector having a multi-period periodicity validator, said radar detector comprising:
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a pulse sensor configured to sense a received pulse;
a first-period detector coupled to said pulse sensor and configured to detect a first period;
a second-period detector coupled to said pulse sensor and configured to detect a second period, said second period being different from said first period; and
a control element, coupled to said first-period detector and to said second-period detector, said control element being configured to determine if a pulse sensed at said pulse sensor exhibited a period matching one of said first and second periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for detecting the presence of an active radar signal comprising:
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a) establishing an expected period for pulses in a pulse train;
b) sensing a received pulse having timing parameters;
c) determining whether said timing parameters of said received pulse match said expected period; and
d) determining whether said timing parameters of said received pulse match an alternate period, said alternate period being different from said expected period. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A radar detector having a multi-period periodicity validator, said radar detector comprising:
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a pulse sensor configured to sense a received pulse;
a first-period detector coupled to said pulse sensor and configured to detect an expected period;
a second-period detector coupled to said pulse sensor and configured to detect a first-alternate period;
a third-period detector coupled to said pulse sensor and configured to detect a second-alternate period, wherein said first-alternate period is one-half of said expected period, and said second-alternate period is twice said expected period; and
a control element coupled to said first-period detector, said second-period detector, and said third-period detector, said control element being configured to determine if a pulse sensed at said pulse sensor exhibited a period matching one of said expected, first-alternate, or second-alternate periods. - View Dependent Claims (21, 22)
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Specification