Diversity time and frequency location receiver
First Claim
1. A diversity receiver, comprising:
- a first receiver subsystem comprising a terrestrial broadcast receiver;
a common processor platform (CPP) coupled via first link means to the first receiver subsystem, wherein the first receiver subsystem provides a stable time reference and position information to the CPP via the first link means;
second link means for coupling the diversity receiver to a sensor platform of a wireless location system (WLS) and providing time and frequency references and location data to said sensor platform;
a second receiver subsystem comprising a GNSS receiver operatively coupled via third link means to said CPP; and
a reference oscillator operatively coupled to the CPP, wherein the CPP is configured to discipline the reference oscillator and the reference oscillator is configured to provide a stable frequency reference to the CPP;
wherein the time and frequency references provided via the second link means are usable to synchronize the sensor platform with other sensor platforms of the WLS.
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Accused Products
Abstract
A Wide Area Sensor Network is disclosed that utilizes wideband software defined radios (SDRs) to provide a capability to monitor the airwaves over a wide frequency range, detect when critical frequencies are being jammed or otherwise interfered with, and locate the source of the interference so that the interference can be eliminated. In addition, a diversity receiver is disclosed. The diversity receiver generates position, time and frequency references for use in locating and synchronizing sensor platforms of a WLS. In an illustrative embodiment, the diversity receiver comprises a first receiver subsystem comprising a terrestrial broadcast receiver, and a common processor platform (CPP) coupled via first link means to the first receiver subsystem. The first receiver subsystem provides a stable time reference and position information to the CPP via the first link means. In addition, the diversity receiver includes second link means for coupling the diversity receiver to a sensor platform and providing time and frequency references and location data to the sensor platform.
34 Citations
21 Claims
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1. A diversity receiver, comprising:
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a first receiver subsystem comprising a terrestrial broadcast receiver; a common processor platform (CPP) coupled via first link means to the first receiver subsystem, wherein the first receiver subsystem provides a stable time reference and position information to the CPP via the first link means; second link means for coupling the diversity receiver to a sensor platform of a wireless location system (WLS) and providing time and frequency references and location data to said sensor platform; a second receiver subsystem comprising a GNSS receiver operatively coupled via third link means to said CPP; and a reference oscillator operatively coupled to the CPP, wherein the CPP is configured to discipline the reference oscillator and the reference oscillator is configured to provide a stable frequency reference to the CPP; wherein the time and frequency references provided via the second link means are usable to synchronize the sensor platform with other sensor platforms of the WLS. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A first location sensor for use in a wireless location system (WLS) comprising a network of location sensors, said first location sensor comprising:
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a first receiver subsystem comprising an HDTV receiver; a common processor platform (CPP) coupled via first link means to the first receiver subsystem, wherein the first receiver subsystem provides a stable time reference and position information to the CPP via the first link means; second link means for coupling the first location sensor to a sensor platform and providing time and frequency references and location data to said sensor platform; a second receiver subsystem comprising a GNSS receiver operatively coupled via third link means to said CPP, wherein the second receiver subsystem provides a second stable time reference and position information to the CPP via the third link means; and a reference oscillator operatively coupled to the CPP; wherein the CPP is configured to communicate via said first and third link means with the first and second receiver subsystems, to receive stable time signals from the receiver subsystems, and to use at least one of the time signals to discipline the reference oscillator, and wherein said reference oscillator provides a stable frequency reference to the CPP. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification