Monopulse tracking apparatus and method of operating same
First Claim
1. In the operation of a monopulse receiver, such receiver having a first and a second output terminal and a first and a second amplifier channel wherein the monopulse sum signal, S, the pitch error signal, p, and the yaw error signal, y, may be derived simultaneously from corresponding receiver signals, the method of:
- (a) forming a pair of composite signals defined as [S+(p+jy)] and [S-(p+jy)];
(b) during a first interval, passing the composite signal [S+(p+jy)] through the first amplifier channel to the first output terminal and the composite signal [S-(p+jy)] through the second amplifier channel to the second output terminal;
(c) during a second interval following the first interval, passing the composite signal [S+(p+jy)] through the second amplifier channel to the first output terminal and the composite signal [S-(p+jy)] through the first amplifier channel to the second output terminal;
(d) repeating steps (a), (b) and (c) during successively occurring intervals to provide an even number of successively amplified composite signals [S+(p+jy)] at the first output terminal and a like even number of successively amplified composite signals [S-(p+jy)] at the second output terminal; and
(e) separately averaging each even number of successively amplified composite signals [S+(p+jy)], [S-(p+jy)].
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Abstract
A method of processing in a two-channel monopulse receiver and processor is shown to include the steps of: (a) forming composite signals equal to [S+(p+jy)] and [S-(p+jy)] where S in a monopulse sum signal and p and y are, respectively, pitch and yaw error signals; (b) alternately passing the composite signals through a two-channel amplifier; and (c) separating the components in the resulting amplified composite signals for conventional monopulse processing and smoothing to eliminate the effects of any imbalance (in phase or amplitude) between the channels in the two-channel amplifier.
10 Citations
8 Claims
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1. In the operation of a monopulse receiver, such receiver having a first and a second output terminal and a first and a second amplifier channel wherein the monopulse sum signal, S, the pitch error signal, p, and the yaw error signal, y, may be derived simultaneously from corresponding receiver signals, the method of:
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(a) forming a pair of composite signals defined as [S+(p+jy)] and [S-(p+jy)]; (b) during a first interval, passing the composite signal [S+(p+jy)] through the first amplifier channel to the first output terminal and the composite signal [S-(p+jy)] through the second amplifier channel to the second output terminal; (c) during a second interval following the first interval, passing the composite signal [S+(p+jy)] through the second amplifier channel to the first output terminal and the composite signal [S-(p+jy)] through the first amplifier channel to the second output terminal; (d) repeating steps (a), (b) and (c) during successively occurring intervals to provide an even number of successively amplified composite signals [S+(p+jy)] at the first output terminal and a like even number of successively amplified composite signals [S-(p+jy)] at the second output terminal; and (e) separately averaging each even number of successively amplified composite signals [S+(p+jy)], [S-(p+jy)]. - View Dependent Claims (2, 3, 4, 5, 6)
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7. In a two-channel receiver for a monopulse radar wherein a monopulse sum, S, a pitch error, p, and a yaw error, y, signal are processed, the improvement comprising:
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(a) means for multiplexing the p and the y signals to form a signal (p+jy), where j equals (-1)1/2 ; (b) means for combining the S signal and the signal (p+jy) to form a first composite signal [S+(p+jy)] and a second composite signal [S-(p+jy)]; (c) means, responsive to successively occurring control signals, for alternately applying the [S+(p+jy)] signal to one and then the other amplifier channel and for simultaneously applying the [S-(p+jy)] signal to the amplifier channel to which the [S+(p+jy)] signal is not applied; and (d) means, responsive to successively occurring control signals, for passing each [S+p+jy)] signal out of the amplifier channels over a first output line and each [S-(p+jy)] signal out of the amplifier channels over a second output line. - View Dependent Claims (8)
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Specification