Accession Number:

ADA193132

Title:

A Numerically Efficient Digital Matched Filter for Periodic and Windowed Periodic Radar Waveforms

Descriptive Note:

Interim rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• Gerlach, Karl

Report Date:

1988-02-26

Pagination or Media Count:

15.0

Abstract:

An algorithm is presented for implementing a digital matched filter for periodic and windowed periodic radar waveforms. The algorithm is based on circular convolutional techniques. For moderate to high duty cycles d radar on time to pulse repetition interval PRI ratio, the circular convolutional algorithm uses 50 fewer complex multiply operations CMOPs than does a fast convolution implementation. In fact, if BPRI is the radar waveform bandwidth-PRI product, then the circular convolutional technique is numerically more efficient if d 1sq. rt8BPRI. Furthermore, the circular convolution technique is numerically more efficient when the pulse compression ratio p sq. rt. BPRI8 . Keywords Radar Matched filter Waveforms.

Descriptors:

• *DIGITAL FILTERS
• *MATCHED FILTERS
• *RADAR SIGNALS
• ALGORITHMS
• CIRCULAR
• CONVOLUTION
• EFFICIENCY
• HIGH RATE
• PERIODIC VARIATIONS
• PULSE RATE
• PULSE SPACING MODULATION
• RATIOS
• REPETITION RATE
• SIGNAL PROCESSING
• WAVEFORMS

Subject Categories:

• Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE