Radar network communication through sensing of frequency hopping
View Patent ↗In one embodiment, a radar communication system includes a plurality of radars having a communication range and being capable of operating at a sensing frequency and a reporting frequency, wherein the reporting frequency is different than the sensing frequency, each radar is adapted for operating at the sensing frequency until an event is detected, each radar in the plurality of radars has an identification/location frequency for reporting information different from the sensing frequency, a first radar of the radars which senses the event sends a reporting frequency corresponding to its identification/location frequency when the event is detected, and all other radars in the plurality of radars switch their reporting frequencies to match the reporting frequency of the first radar upon detecting the reporting frequency switch of a radar within the communication range. In another embodiment, a method is presented for communicating information in a radar system.
1. A radar communication system, comprising:
a plurality of radars having a communication range and operating at a sensing frequency and a reporting frequency,
wherein the reporting frequency is different than the sensing frequency,
wherein each radar is adapted for operating at the sensing frequency until an event is detected,
wherein each radar in the plurality of radars has an identification/location frequency for reporting information different from the sensing frequency,
wherein a first radar of the radars which senses the event sends a reporting frequency corresponding to its identification/location frequency when the event is detected, and
wherein all other radars in the plurality of radars switch their reporting frequencies to match the reporting frequency of the first radar upon detecting the reporting frequency switch of a radar within the communication range.
2. The radar communication system as recited in claim 1 , wherein the plurality of radars are adapted for operating at ultra-wide band frequencies.
3. The radar communication system as recited in claim 1 , wherein the plurality of radars are adapted for operating at narrowband frequencies.
4. The radar communication system as recited in claim 1 , wherein the plurality of radars are adapted for operating with impulse frequencies.
5. The radar communication system as recited in claim 1 , wherein the plurality of radars are adapted for operating with continuous wave frequencies.
6. The radar communication system as recited in claim 1 , wherein each radar has a unique identification/location frequency which represents a location of the radar and identifies the radar.
7. The radar communication system as recited in claim 1 , wherein each radar has a unique identification/location frequency range from which a plurality of frequencies represent a plurality of events.
8. The radar communication system as recited in claim 1 , wherein the plurality of radars are positioned in a daisy-chain arrangement such that each radar is within the maximum communication range of two other radars.
9. The radar communication system as recited in claim 1 , with the proviso that no communication device other than the plurality of radars is present in the system or used to communicate information from the plurality of radars.
10. A method of communicating information in a radar system, the method comprising:
detecting an event using a first radar operating at a sensing frequency;
switching a reporting frequency of the first radar from a reporting frequency to an identification/location frequency;
detecting the identification/location frequency sent by the first radar using a second radar operating at the sensing frequency;
switching a reporting frequency of the second radar to match the identification/location frequency of the first radar; and
determining that the event occurred in an operating range of the first radar based on the second radar's reporting frequency being switched to the identification/location frequency of the first radar.
11. The method as recited in claim 10 , wherein the first and second radars are adapted for operating at ultra-wide band frequencies.
12. The method as recited in claim 10 , wherein the first and second radars are adapted for operating at narrowband frequencies.
13. The method as recited in claim 10 , wherein the first and second radars are adapted for operating with impulse frequencies.
14. The method as recited in claim 10 , wherein the first and second radars are adapted for operating with continuous wave frequencies.
15. The method as recited in claim 10 , wherein the first and second radars each have a unique identification/location frequency which represents a location of the radar and identifies the radar.
16. The method as recited in claim 10 , wherein the first and second radars each have a unique identification/location frequency range from which a plurality of frequencies represent a plurality of events.
17. The method as recited in claim 10 , further comprising switching a reporting frequency of a plurality of radars positioned in a daisy-chain arrangement between the First radar and the second radar such that the first radar may cause the reporting frequency of the second radar to be switched by causing the reporting frequency of each radar in the daisy-chain to switch, wherein each radar is within a maximum communication range of two other radars.
18. The method as recited in claim 10 , with the proviso that no communication device other than radars is present in the system or used to communicate information from the radars.