Adaptive range vehicle locating unit, vehicle tracking unit and vehicle recovery system including same
First Claim
1. An adaptive range vehicle locating unit comprising:
- a narrowband baseband generator for generating a narrowband signal;
a wideband baseband generator for generating a wideband signal; and
a timing control circuit responsive to an activation signal to transmit, alternately, said narrowband signal at a first rate, and said wideband signal at a second rate and responsive to a track signal to transmit one of said wideband and narrowband signals at a third, different, rate.
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0 Petitions
Accused Products
Abstract
An adaptive range vehicle recovery system including an adaptive range vehicle locating unit including a narrowband baseband generator for generating a narrowband signal, a wideband baseband generator for generating a wideband signal, a timing control circuit responsive to an activation signal to transmit, alternately, said narrowband signal at a first rate, and said wideband signal at a second rate and responsive to a track signal to transmit one of said wideband and narrowband signals at a third, different, rate; and also to an adaptive range vehicle recovery system including an adaptive range vehicle track unit including a data decoder including, a wideband decoder for detecting data from a wideband baseband signal, a narrowband decoder for detecting data from a narrowband baseband signal, a bandwidth detector responsive to a received signal to distinguish narrowband and wideband signals and an input switching circuit responsive to said bandwidth detector for directing the wideband signal to the wideband decoder and the narrowband signal to the narrowband decoder.
13 Citations
34 Claims
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1. An adaptive range vehicle locating unit comprising:
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a narrowband baseband generator for generating a narrowband signal; a wideband baseband generator for generating a wideband signal; and a timing control circuit responsive to an activation signal to transmit, alternately, said narrowband signal at a first rate, and said wideband signal at a second rate and responsive to a track signal to transmit one of said wideband and narrowband signals at a third, different, rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An adaptive range vehicle recovery system comprising:
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an adaptive range vehicle locating unit including a narrowband baseband generator for generating a narrowband signal, a wideband baseband generator for generating a wideband signal, a timing control circuit responsive to an activation signal to transmit, alternately, said narrowband signal at a first rate, and said wideband signal at a second rate and responsive to a track signal to transmit one of said wideband and narrowband signals at a third, different, rate; and an adaptive range vehicle tracking unit including a data decoder including, a wideband decoder for detecting data from a wideband baseband signal, a narrowband decoder for detecting data from a narrowband baseband signal, a bandwidth detector responsive to a received signal to distinguish said narrowband and wideband signals and an input switching circuit responsive to said bandwidth detector for directing said wideband signal to said wideband decoder and the narrowband signal to the narrowband decoder. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification