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US 5,831,570 AGranted
Radar resolution using monopulse beam sharpening
AssigneeAlliedSignal Inc.
InventorsDanny F. Ammar, Randall C. Spires, Steven R. Sweet
Life of this patent
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Abstract
A method and apparatus for improving resolution of targets in a monopulse radar beam.
Claims24
A radar system, comprising:
- a radar antenna for radiating and receiving radar signals through a sum port and a delta port;
- a radar transmitter-receiver for generating and detecting said radar signals, said transmitter-receiver coupled to said antenna;
- a signal processor coupled to said antenna, said signal processor including:
- means for generating a sum squared channel,
- means for generating a delta squared channel, and
- means for generating a delta.sub.-- d channel.
3 more elements
A monopulse radar system, comprising:
- a radar antenna having a capacity for radiating and receiving radar signals through a sum port and a delta port;
- a radar transmitter for generating said radar signals, said transmitter coupled to said antenna;
- a radar receiver for amplifying and filtering said received radar signals, said receiver coupled to said antenna;
- and
- a signal processor coupled to said antenna, said signal processor including:
- means for generating a sum squared channel, said means including processing a signal transmitted and received through said sum port,
- means for generating a delta squared channel, said means including processing a signal transmitted and received through said delta port, and
- means for generating a delta.sub.-- d channel, said means including calculating the square root of the absolute value of the product of said sum squared channel and said delta squared channel.
5 more elements
A monopulse radar system, comprising:
- a radar antenna for radiating and receiving radar signals through a sum port and a delta port;
- a radar transmitter for generating said radar signals, said transmitter means operatively coupled to said antenna means;
- a radar receiver for receiving a return echo from said radiated radar signals, said receiver means operatively coupled to said antenna means;
- a signal processor coupled to said antenna means, said signal processor means including:
- means for generating a sum squared channel, said means including processing a signal transmitted and received on said sum port,
- means for generating a delta channel, said means including processing a signal transmitted on said sum port and received on said delta port,
- means for generating a delta squared channel, said means including processing a signal transmitted and received on said delta port,
- means for generating a delta.sub.-- d channel, said delta.sub.-- d generating means including means for calculating the square root of the absolute value of the product of said sum squared channel and said delta squared channel, and
- each of said generating means including intensity increasing means for increasing the intensity of targets and for increasing the intensity of transition points between said targets;
- and
- a display for displaying radar images, said display means operatively coupled to said signal processor means.
8 more elements
A method for target resolution in a monopulse radar system, said method comprising the steps of:
- transmitting and receiving a radar signal through a sum port of a radar antenna;
- transmitting and receiving a radar signal through a delta port of a radar antenna;
- processing said signal transmitted and received through said sum port to generate a sum squared channel;
- processing said signal transmitted and received through said delta port to generate a delta squared channel;
- and
- processing said sum squared channel and said delta squared channel to generate a delta.sub.-- d channel.
3 more elements
A method for target resolution in a monopulse radar comprising the steps of:
- processing a radar sum channel signal to obtain a sum squared channel of target information;
- processing a radar delta channel signal to obtain a delta squared channel of target information;
- and
- creating a delta.sub.-- d channel of target information by calculating a square root of an absolute value of a product of said sum squared channel and said delta squared channel.
1 more element
A monopulse radar comprising:
- a first input for receiving a sum channel information;
- a second input for receiving a delta channel information;
- and
- a signal processor coupled to said first input and to said second input for:
- (a) creating a delta.sub.-- d channel by calculating a square root of an absolute value of a product of a sum squared channel and a delta squared channel;
- and
- (b) resolving a target from at least one of said sum information, said delta information and said delta.sub.-- d channel.
4 more elements
Dependencies are inferred from the claim text.