Optimum edges for speakers and musical instruments

• US 5,955,989 A
• Filed: 12/23/1996
• Issued: 09/21/1999
• Est. Priority Date: 11/15/1990
• Status: Expired due to Fees

• Current Assignee: Ming-Chiang Li
• Original Assignee: Ming-Chiang Li
• Inventors: Li, Ming-Chiang
• Primary Examiner(s): Tarcza, Thomas H.
• Assistant Examiner(s): PHAN, DAO LINDA
• Application Number:
  US08/772,629
• Time in Patent Office: 1,002 Days
• Field of Search: 342/368, 342/375, 342/372, 342/373, 342/374, 342/58, 342/125, 342/357.01, 342/357.06
• US Class Current: 342/368
• CPC Class Codes: G01S 13/003 Bistatic radar systems; Multistatic radar systems
• CPC Class Codes: G01S 13/86 Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
• CPC Class Codes: G01S 7/4082 using externally generated reference signals, e.g. via remote reflector or transponder

Abstract

A descriptor has the capabilities of providing state vectors to describe movable platforms, extended objects, information collecting and surveillance systems. An aggregator furnishes the descriptor with abilities to deliver the state vectors in dynamical situations of instabilities and chaos. The former comprises navigation antennas, optical RF link systems, and processing center for delivering the state vectors from received navigation RF signals. The latter comprises an RF delay loop for aggregating a train of RF signals into a single RF pulsed signal and means for outputting the pulsed signal for analysis. The aggregator has many applications. For instance, an aggregator is able to unscramble pseudo random signals with partial codes and to enhance the statistics of weak transient signals.

Claims

1. A descriptor comprising:

a processing center;

an antenna network comprised of two or more antenna subsystems;

a processor network comprised of one or more processors located at the processing center;

an RF link network comprised of at least one optical RF link system;

wherein each of said antenna subsystems comprises one or more navigation antennas;

wherein the navigation antennas receive navigation RF signals;

wherein the RF link network transits the navigation RF signals from the antenna network to the processor network;

wherein the processor network analyzes the navigation RF signals to measure at least one relative position of antenna subsystems or navigation antennas, and one or more configuration vectors of the antenna network.

2. The descriptor of claim 1 wherein the processor network includes a code correlator, responsive to the received navigation RF signals, to generate one or more RF signal trains;

and an aggregator, responsive to an RF signal train generated by the code correlator, to generate an pulsed RF signal.

3. The descriptor of claim 2 wherein the processor network further includes an RF signal train generator, responsive to the pulsed RF signal, to regenerate replicas of the pulsed RF signal.

4. The descriptor of claim 1 wherein said navigation antennas are adapted to receive navigation RF signals from moving or stationary platforms.

5. The descriptor of claim 1 wherein:

(a) the antenna network is integrated with a physical system comprised of one or more physical antennas;

(b) the one or more antenna subsystems of the antenna network, responsive to integration, establishes mechanical relationships with the one or more physical antennas of the physical system;

(c) the descriptor further comprises an integration processor;

(d) the integration processor, responsive to the mechanical relationships, translates the one or more configuration vectors to one or more state vectors in describing the physical system.

6. The descriptor of claim 1 wherein:

(a) the antenna network is integrated with a structured object;

(b) the one or more antenna subsystems of the antenna network, responsive to integration, establish mechanical relationships with the structured object;

(c) the descriptor further comprises an integration processor;

(d) the integration processor, responsive to the mechanical relationships, translates the one or more configuration vectors to one or more state vectors in describing the structured object.

7. A method for operating a descriptor comprising the steps of:

(a) receiving navigation RF signals by navigations antennas in antenna subsystems of an antenna network;

(b) linking the antenna network with a processor network located at a processing center;

(c) transiting the navigation RF signals from the antenna network to the processor network through at least one optical RF link system;

(d) analyzing the navigation RF signals by the processor network to measure at least one relative position of navigation antennas, and one or more configuration vectors of the antenna network.

8. The method of claim 7 further comprising steps of:

(e) sending the received navigation RF signals to a code correlator;

(f) generating one or more RF signal trains by the code correlator;

(g) sending an RF signal train generated from the code correlator to an aggregator;

(h) generating a pulsed RF signal by the aggregator;

(i) processing the pulsed RF signal.

9. The method of claim 8 further comprising steps of:

(j) sending the pulsed RF signal to an RF signal train generator;

(k) regenerating replicas of the pulsed RF signal by the RF signal train generator;

(l) processing the regenerated replicas.

10. The method of claim 7 further comprising steps of:

(e) adapting the navigation antennas to receive navigation RF signals from moving or stationary platforms.

11. The method of claim 7 further comprising steps of:

(e) integrating the antenna network with a physical system comprised of one or more physical antennas;

(f) establishing mechanical relationships between the one or more antenna subsystems of the antenna network and the one or more physical antennas of the physical system;

(g) translating the one or more configuration vectors, responsive to the mechanical relationships, to one or more state vectors in describing the physical system.

12. The method of claim 7 further comprising steps of:

(e) integrating the antenna network with a structured object;

(f) establish mechanical relationships with the structured object with the one or more antenna subsystems of the antenna network;

(g) translating the one or more configuration vectors, responsive to the mechanical relationships, to one or more state vectors in describing the structured object.

13. A mechanism for describing a physical system comprising:

a processing center;

an antenna network comprised of antenna subsystems;

an RF link network comprised of at least one optical RF link system;

(a) wherein each of said antenna subsystems comprises one or more navigation antennas.;

(b) wherein the antenna network is integrated with the physical system to establish mechanical relationships between the navigation antennas and said physical system;

(c) wherein the RF link network transits navigation RF signals received by the antenna network to the processor center;

(d) wherein the processor center analyzes the navigation RF signals received by the antenna network to measure at least one relative position of navigation antennas, and one or more configuration vectors of the antenna network;

(e) wherein the processing center, through the mechanical relationship;

translate the configuration vectors to one or more state vectors in describing the physical system.

14. The mechanism of claim 13 wherein the processing center uses a kinematic differential method to process the navigation signals.

15. The mechanism of claim 13 wherein the processing center comprises a stable oscillator;

wherein the processing center uses the stable oscillator to process received navigation RF signals from the antenna network.

16. The mechanism of claim 13 wherein the processing center comprises a aggregator to process the navigation RF signals.

17. The mechanism of claim 13 wherein the processing center comprises an interferoceiver to process the navigation RF signals.

18. The mechanism of claim 13 wherein the processing center comprises an optical fiber delay loop to process the navigation RF signals.

19. The mechanism of claim 13 further comprises an apparatus to monitor or survey the integrity of the physical system.

20. The mechanism of claim 13 wherein said physical system is airborne, ground based or submerged, and is rigid or fixable.