Title :
Range-time-sidelobe reduction technique for FM-derived polyphase PC codes
Author :
Lewis, Bernard L.
fDate :
7/1/1993 12:00:00 AM
Abstract :
A simple, easy to implement technique is presented that can significantly reduce the range-time-sidelobes of a class of polyphase pulse compression codes. This technique reduces the highest sidelobes to only one code element magnitude independent of effective pulse compression ratio. The codes considered are polyphase codes that are derived from the step-approximation-to-linear-frequency-modulation and linear-frequency-modulation waveforms such as the P1, P3, P4, and the Frank codes. The characteristics of these codes that make this possible are explained
Keywords :
codes; data compression; frequency modulation; Doppler effect; FM-derived polyphase PC codes; Frank codes; P1; P3; P4; linear-frequency-modulation waveforms; polyphase pulse compression codes; range-time-sidelobes; step-approximation-to-linear-frequency-modulation; two sample sliding window subtractor; Bandwidth; Chirp modulation; Frequency modulation; Linear approximation; Local oscillators; Modulation coding; Petroleum; Phase detection; Pulse compression methods; Pulse modulation; Sampling methods;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
