Patent ID: 8044798
Filing Date: 2011-10-25
Classification: G01K,G08B

Abstract:
1. A method for detecting at least one of temperature, average speed within a receiving antenna lobe and a first source of microwave radiation using passive reception of said microwave radiation, comprising: receiving a first microwave radiation signal at a first receiver from the first source, said first receiver including a first antenna having said receiving antenna lobe, a first magnitude of said first received microwave radiation signal being indicative of a first temperature of said first source of said first received microwave radiation signal; receiving a second microwave radiation signal from said first source at said first receiver later in time, a second magnitude of said second microwave radiation signal being indicative of a second temperature of said first source of said first and said second received microwave radiation signals, wherein the difference in time between receipt of said first and said second microwave radiation signals is indicative of speed of said first source within said receiving antenna lobe, said first and said second microwave radiation signals being within a range of frequencies protected from active transmission in a geographic area encompassing a location of said first receiver, said first and said second microwave radiation signals being in a range of frequencies between 0.5 and 3 GHz; and calculating average speed of said first source within said receiving antenna lobe from the difference in time between receipt of said first and said second microwave signals and a distance said first source travels within said receiving antenna lobe.