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A method for measuring range and bearing of an object. At least a portion of a first signal is transmitted from a sensor. The transmitted signal is reflected from an object and received by the sensor. At least a portion of the first signal is applied a first mixer and a second mixer. The received si

A method for measuring range and bearing of an object. At least a portion of a first signal is transmitted from a sensor. The transmitted signal is reflected from an object and received by the sensor. At least a portion of the first signal is applied a first mixer and a second mixer. The received signal is applied to the first mixer and the second mixer. A second signal is generated from the first mixer, and a third signal is generated from the second mixer when the portion of the first signal that was transmitted overlaps the reflected signal at least partially. Bearing angle, degree on or off boresight and object range may be determined from the second and third signals, or a combination thereof. Also disclosed is a sensor for object range and bearing measurement.

대표청구항 ▼

A method for measuring range and bearing of an object. At least a portion of a first signal is transmitted from a sensor. The transmitted signal is reflected from an object and received by the sensor. At least a portion of the first signal is applied a first mixer and a second mixer. The received si

A method for measuring range and bearing of an object. At least a portion of a first signal is transmitted from a sensor. The transmitted signal is reflected from an object and received by the sensor. At least a portion of the first signal is applied a first mixer and a second mixer. The received signal is applied to the first mixer and the second mixer. A second signal is generated from the first mixer, and a third signal is generated from the second mixer when the portion of the first signal that was transmitted overlaps the reflected signal at least partially. Bearing angle, degree on or off boresight and object range may be determined from the second and third signals, or a combination thereof. Also disclosed is a sensor for object range and bearing measurement. cle surveillance marker, comprising: providing a substrate layer; placing an elongated bias magnet on said substrate layer; depositing a cavity layer on said substrate layer, said cavity layer covering and attaching said bias magnet to said substrate layer and defining an elongated cavity adjacent said bias magnet; placing a magnetomechanical resonator in said cavity; and, sealing a cover onto said cavity layer wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered. 8. The method of claim 7 wherein two elongated bias magnets are placed on said substrate layer in parallel relation to each other, said elongated cavity being defined between said two elongated bias magnets. 9. The method of claim 7 further including depositing a resonator support member in said cavity, said resonator support member adapted to rest against a mechanical vibration nodal point of said resonator when said resonator is disposed in said cavity thereby supporting said resonator without substantially encumbering mechanical vibration thereof. 10. The method of claim 7 wherein a first portion of said cavity layer is deposited on said substrate layer and a second portion of said cavity layer is deposited on said cover, said sealing act connects said first and said second cavity layer portions together defining said cavity wherein said cavity is substantially impervious to restricting said resonator. 11. The method of claim 7 further including the act of depositing an adhesive layer on said cavity layer prior to the act of sealing a cover onto said cavity layer. 12. A method of making a magnetomechanical electronic article surveillance marker, comprising: providing a magnetizable substrate layer; depositing a cavity layer on said substrate layer, said cavity layer defining an elongated cavity; depositing a resonator support member in said cavity; placing a magnetomechanical resonator in said cavity, said resonator support member being disposed between said resonator and said magnetizable substrate layer; and, sealing a cover onto said cavity layer wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered. 13. The method of claim 12 wherein said resonator support member is adapted to rest against a mechanical vibration nodal point of said magnetomechanical resonator when said resonator is disposed in said cavity thereby supporting said resonator without substantially encumbering mechanical vibration thereof. 14. A method of making a magnetomechanical electronic article surveillance marker, comprising: molding a cavity in a plastic substrate, said cavity sized to receive a magnetomechanical resonator, said substrate sized relatively slightly larger than said magnetomechanical resonator; placing said magnetomechanical resonator into said cavity; sealing a first cover layer to said plastic substrate wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered, said first cover layer being sized larger than said plastic substrate; placing a bias magnet on said first cover layer adjacent said plastic substrate; and, sealing a second cover layer to said plastic substrate, to said bias magnet, and to said first cover layer, wherein said bias magnet is held substantially fixed in position relative to said resonator. 15. The method of claim 14 wherein said second cover layer is an adhesive layer. 16. The method of claim 14 wherein two bias magnets are placed on said first cover layer, said plastic substrate disposed adjacent and between said bias magnets, said second cover layer sealing both of said bias magnets in a position substantially fixed relative to said resonator. 17. The method of claim 14 wherein said cavity is molded using RF molding. 18. A method of making a magnetomechanical electronic article surveillance marker, comprising: placing a bias magnet on a plastic substrate; molding a cavity in said plastic substrate adjacent said bias magnet, said cavity sized to receive a magnetomechanical resonator, said bias magnet being embedded into said plastic substrate substantially simultaneously with said cavity formation; placing a magnetomechanical resonator into said cavity; sealing a cover layer to said plastic substrate wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered. 19. The method of claim 18 wherein two bias magnets are placed on said plastic substrate and said cavity is molded between said bias magnets, both of said bias magnets being embedded into said plastic substrate. 20. The method of claim 18 wherein said molding act includes the formation of a resonator support member in said cavity wherein said resonator support member adapted to rest against a mechanical vibration nodal point of said resonator when said resonator is disposed in said cavity thereby supporting said resonator without substantially encumbering mechanical vibration thereof. 21. The method of claim 18 wherein said cavity is molded using RF molding. 22. A method of making a magnetomechanical electronic article surveillance marker, comprising: molding a resonator cavity and a bias cavity in a plastic substrate using RF molding, said resonator cavity sized to receive a magnetomechanical resonator, said bias cavity sized to receive a bias magnet; placing a magnetomechanical resonator into said resonator cavity, and placing a bias magnet into said bias cavity; sealing a cover layer to said plastic substrate wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered and said bias magnet is retained in a substantially fixed position. 23. The method of claim 22 wherein said molding act includes molding two bias cavities and a bias magnet is placed in each bias cavity, each bias magnet being retained in a substantially fixed position by said cover layer. 24. The method of claim 22 wherein said cover layer is sealed to said plastic substrate using ultrasound. 25. A magnetomechanical electronic article surveillance marker, comprising: an EAS marker housing having a cavity sized to receive a magnetomechanical resonator, said magnetomechanical resonator disposed in said cavity; a cover sealed to said housing and capturing said resonator within said cavity; a bias magnet disposed adjacent said resonator; said housing including a relatively flexible portion adjacent said cavity, said flexible portion adapted to bend around a curved surface to facilitate attaching the marker to the curved surface. 26. The marker of claim 25 wherein said cavity and said relatively flexible portion are RF molded into said EAS marker housing. einal map. 36. The apparatus of claim 34, wherein the second output is data representing a bone map. 37. A biometric sensing apparatus, comprising: a piezoelectric ceramic sensor having at least fifty thousand piezoelectric ceramic elements arranged in an array to detect features of a finger proximate to said array; and a processor, coupled to said sensor, that receives an input from said sensor representative of features of the finger and produces an output, wherein said sensor operates in a voltage mode to produce voltage data, and said processor includes a voltage detector that processes voltage data received from said sensor to produce a second output. 38. The apparatus of claim 37, wherein the second output is data representing a fingerprint pattern. 39. A biometric sensing apparatus, comprising: a piezoelectric ceramic sensor having a plurality of piezoelectric ceramic elements arranged in an array and spaced on a pitch equal to or less than approximately two hundred microns to detect features of a finger proximate to said array; a processor, coupled to said sensor, that receives an input from said sensor representative of features of the finger and produces an output; and an input signal generator that applies an AC voltage signal across said plurality of piezoelectric ceramic elements. 40. The apparatus of claim 39, wherein the output is data representing a fingerprint pattern. 41. The apparatus of claim 39, wherein the output is data representing blood flow. 42. The apparatus of claim 41, wherein the output is data representing arteriole blood flow. 43. The apparatus of claim 41, wherein the output is data representing capillary blood flow. 44. The apparatus of claim 39, wherein the output is data representing an arteriole-veinal map. 45. The apparatus of claim 39, wherein the output is data representing a bone map. 46. A biometric sensing apparatus, comprising: a piezoelectric ceramic sensor having at least fifty thousand piezoelectric ceramic elements arranged in an array and spaced on a pitch equal to or less than approximately two hundred microns to detect features of a finger proximate to said array; and a processor, coupled to said sensor, that receives data from said sensor and produces an output representative of features of the finger; and an input signal generator that applies an AC voltage signal across said at least fifty thousand piezoelectric ceramic elements. 47. The apparatus of claim 46, wherein the output is data representing a fingerprint pattern. 48. The apparatus of claim 46, wherein the output is data representing blood flow. 49. The apparatus of claim 48, wherein the output is data representing arteriole blood flow. 50. The app