Detection system
AssigneeFuruno Electric Co., Ltd.
InventorsHiroshi Iino, Toyoki Sasakura
Life of this patent
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Abstract
The present invention is directed to a detection system which forms reception beams successively in a series of angular directions. The detection system comprises receiving means for receiving incoming signals in such a manner that the frequency of the incoming signals is varied in accordance with the Doppler effect, and a matched filter for pulse-compressing output signals from said receiving means, with output signals from said matched filter being displayed in an indicator.
Claims14
A detection system for receiving incoming signals from a plurality of directions and presenting a display resulting from the received incoming signals on an indicating means, comprising:
- a. receiving means for receiving incoming signals and varying the frequency of the incoming signals to produce a Doppler effect,
- b. a matched filter connected to pulse-compress output signals from said receiving means,
- c. indicating means connected to display output signals from said matched filter, and
- d. control means connected to control said receiving means and indicating means, whereby said receiving means and indicating means are coupled to one another.
A detection system for receiving incoming signals from a plurality of directions and presenting a display resulting from the received incoming signals on an indicating means, comprising:
- a. a plurality of substantially equally spaced receiving elements positioned on a circle or an arc of a circle and means successively switching said elements so that the signals received thereby are derived in substantially the same way as from a single receiving element rotating at a constant speed,
- b. a matched filter connected to pulse-compress the derived output signals from said plurality of receiving elements,
- c. indicating means connected to display the output signals from said matched filter, and
- d. control means connected to control said receiving means and indicating means whereby the indicating means and receiving means are coupled with one another.
A detection system for receiving incoming signals from a plurality of directions and presenting a display resulting from the received incoming signals on an indicating means, comprising:
- a. a receiving means for receiving incoming signals,
- b. a matched filter connected to pulse-compress the output signals from said receiving means,
- c. indicating means connected to a display output signals from said matched filter, and
- d. control means connected to control said receiving means and indicating means whereby the receiving means and indicating means are coupled to one another,
- said receiving means comprising
- (i) a plurality of equally spaced receiving elements designated by consecutive numbers and disposed on a circle or an arc of a circle,
- (ii) switching means connected to successively switch said plurality of receiving elements at a predetermined speed to derive received signals,
- (iii) a signal generator for producing first and second interpolating signals shifted by a half period with respect to one another,
- (iv) a first multiplier connected to multiply the reception signals from the receiving elements designated by odd numbers, by the first interpolating signals,
- (v) a second multiplier connected to multiply the reception signals supplied from the receiving elements designated by even numbers, by the second interpolating signals, and
- (vi) summing means connected to add the output signals from said first and second multipliers.
Dependencies are inferred from the claim text.