Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
246 words
A radiant energy detection system for providing an indication of the azimuth angle of a radiant energy emitting target from said system comprising: a first pair of radiation detectors positioned opposite each other with their sensing surfaces facing in opposite directions, a second pair of radiation detectors positioned opposite each other with their sensing surfaces in opposite directions and in an orientation substantially orthogonal to the sensing surfaces of said first pair of detectors, support means for supporting said detectors in a fixed position, a chopper device surrounding said detectors, said chopper device being rotatably mounted on said support means, means for rotatably driving said chopper device about said detectors to chop the radiant energy received thereby such that the outputs of said first and second pairs of detectors represent the sine and cosine of the angular position of the target from said detectors, first differencing means for receiving the outputs of said first pair of detectors and generating a signal in accordance with the difference therebetween, second differencing means for receiving the outputs of said second pair of detectors and generating a signal in accordance with the difference therebetween, analog processor means for receiving the outputs of said differencing means and generating therefrom a first signal representing the angle of said target relative to the detectors and a second signal representing the quadrant in which said angle is located, and readout means for providing a reading of the signals generated by the analog processor means.
Claim 2
Dependent Claim
246 words
A radiant energy detection system for providing an indication of the azimuth angle of a radiant energy emitting target from said system comprising: a first pair of radiation detectors positioned opposite each other with their sensing surfaces facing in opposite directions, a second pair of radiation detectors positioned opposite each other with their sensing surfaces in opposite directions and in an orientation substantially orthogonal to the sensing surfaces of said first pair of detectors, support means for supporting said detectors in a fixed position, a chopper device surrounding said detectors, said chopper device being rotatably mounted on said support means, means for rotatably driving said chopper device about said detectors to chop the radiant energy received thereby such that the outputs of said first and second pairs of detectors represent the sine and cosine of the angular position of the target from said detectors, first differencing means for receiving the outputs of said first pair of detectors and generating a signal in accordance with the difference therebetween, second differencing means for receiving the outputs of said second pair of detectors and generating a signal in accordance with the difference therebetween, analog processor means for receiving the outputs of said differencing means and generating therefrom a first signal representing the angle of said target relative to the detectors and a second signal representing the quadrant in which said angle is located, and readout means for providing a reading of the signals generated by the analog processor means.
Claim 3
Dependent Claim
17 words
The system of claim 1 wherein said detectors are assembled together in the form of a cube.
Claim 4
Dependent Claim
34 words
The system of claim 1 wherein said chopper device has a cylindrical side wall portion, a pair of oppositely positioned apertures each covering approximately 90° of arc being formed in said side wall portion.
Claim 5
Dependent Claim
28 words
The system of claim 1 wherein said support means comprises a casing, said first and second differencing means and said analog processor means being contained in said casing.
Claim 6
Dependent Claim
21 words
The system of claim 4 wherein the means for rotatably driving the chopper device comprises a motor mounted in said casing.
Claim 7
Dependent Claim
30 words
The system of claim 5 and further including a post extending from said casing, said post having a spike at one end thereof for mounting the casing in the ground.
Claim 8
Dependent Claim
15 words
The system of claim 1 wherein said first and second differencing means comprise differential amplifiers.
Claim 9
Dependent Claim
40 words
The system of claim 1 wherein said analog processor means is further adapted to generate a third signal at the time when the vectorial resultant of the outputs of said first and second pairs of detectors reaches a maximum value.