Pulse compression radar signal processor
First Claim
1. In a phase-coded, pulse compression radar including first means for transmitting phase-coded RF pulses, and second means for receiving and conditioning the phase-coded radar return pulses rendered from said transmission, a pulse compression signal processor for decoding said phase-coded radar return pulses from said second means to enhance the resolvability of objects in range, said pulse compression signal processor comprising:
- first filter means responsive to a first signal representative of the phase-code of said transmittal RF pulse to effect a second signal representative of the range correlation response of said first signal;
means for modifying said second signal into a third signal representative of a desired range correlation response;
means governed by said first signal and said third signal to generate a fourth signal representative of a desired filter function; and
second filter means for phase decoding said phase-coded radar return pulse from said second means as a function of said fourth signal to effect substantially said desired range correlation response thereof.
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Abstract
A pulse compression signal processor suitable for use in a phase-coded, pulse compression radar for decoding the phase coded radar return pulses to enhance the resolvability of objects in range is disclosed. The pulse compression signal processor includes a conventional correlation processor operative in accordance with an initial filter function to convert a signal representative of the phase-code of the transmittal RF pulse to effect the range correlation response thereof. The resulting range correlation response is modified in accordance with a desired range correlation response. Both the phase code representative signal and the desired range correlation response signal are converted by fast Fourier transformations into their corresponding frequency domain signals which are divided to effect a desired filter function signal for use in decoding the phase-coded radar return pulses to effect substantially the desired range correlation response thereof. The pulse compression signal processor further includes an interative process to truncate the desired filter function signal in time in accordance with pre-established criteria.
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Citations
10 Claims
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1. In a phase-coded, pulse compression radar including first means for transmitting phase-coded RF pulses, and second means for receiving and conditioning the phase-coded radar return pulses rendered from said transmission, a pulse compression signal processor for decoding said phase-coded radar return pulses from said second means to enhance the resolvability of objects in range, said pulse compression signal processor comprising:
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first filter means responsive to a first signal representative of the phase-code of said transmittal RF pulse to effect a second signal representative of the range correlation response of said first signal; means for modifying said second signal into a third signal representative of a desired range correlation response; means governed by said first signal and said third signal to generate a fourth signal representative of a desired filter function; and second filter means for phase decoding said phase-coded radar return pulse from said second means as a function of said fourth signal to effect substantially said desired range correlation response thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification