System and method for intrusion detection using a time domain radar array
First Claim
1. An intrusion detection system comprising:
- a first time modulated ultra wideband (TM-UWB) radar, wherein said first TM-UWB radar is adapted to transmit UWB pulses and receive signal returns, and wherein said UWB pulses have a wavelength corresponding to the center frequency of said UWB pulses;
a second TM-UWB radar, spaced a distance from said first TM-UWB radar, said distance being greater than ¾
of said wavelength, wherein said second TM-UWB radar is adapted to transmit further UWB pulses, and wherein said further UWB pulses have said wavelength; and
a processor in communications with at least said first TM-UWB radar, wherein said processor detects intrusion based on said signal returns.
3 Assignments
0 Petitions
Accused Products
Abstract
A system and method for highly selective intrusion detection using a sparse array of time modulated ultra wideband (TM-UWB) radars. Two or more TM-UWB radars are arranged in a sparse array around the perimeter of a building. Each TM-UWB radar transmits ultra wideband pulses that illuminate the building and the surrounding area. Signal return data is processed to determine, among other things, whether an alarm condition has been triggered. High resolution radar images are formed that give an accurate picture of the inside of the building and the surrounding area. This image is used to detect motion in a highly selective manner and to track moving objects within the building and the surrounding area. Motion can be distinguished based on criteria appropriate to the environment in which the intrusion detection system operates.
-
Citations
37 Claims
-
1. An intrusion detection system comprising:
-
a first time modulated ultra wideband (TM-UWB) radar, wherein said first TM-UWB radar is adapted to transmit UWB pulses and receive signal returns, and wherein said UWB pulses have a wavelength corresponding to the center frequency of said UWB pulses;
a second TM-UWB radar, spaced a distance from said first TM-UWB radar, said distance being greater than ¾
of said wavelength, wherein said second TM-UWB radar is adapted to transmit further UWB pulses, and wherein said further UWB pulses have said wavelength; and
a processor in communications with at least said first TM-UWB radar, wherein said processor detects intrusion based on said signal returns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. An intrusion detection system comprising:
-
a first time modulated ultra wideband (TM-UWB) radar, wherein said first TM-UWB radar is adapted to transmit UWB pulses in a given area and to receive signal returns, wherein said UWB pulses have a wavelength corresponding to the center frequency of said UWB pulses;
a second TM-UWB radar, spaced a distance from said first TM-UWB radar, said distance being greater than ¼
of said wavelength, wherein said second TM-UWB radar is adapted to transmit further UWB pulses in said given area, wherein said further UWB pulses have said wavelength; and
a processor in communications with at least said first TM-UWB radar, wherein said processor detects motion within said given area based on said signal returns. - View Dependent Claims (25, 26, 27)
-
-
28. A method for detecting intrusion, comprising the steps of:
-
a. transmitting ultra wideband (UWB) pulses from a first location, wherein said UWB pulses have a wavelength corresponding to the center frequency of said UWB pulses;
b. transmitting further UWB pulses having said wavelength from a second location, wherein said second location is spaced a distance from said first location, said distance being greater than ¼
of said wavelength;
c. receiving signal returns at at least said first location; and
d. detecting intrusion based on said signal returns. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37)
-
Specification