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Noncoherent pulse compression (NCPC), suggested recently, uses on-off keying (OOK) signals, obtained from Manchester coding a binary sequence with favorable a-periodic autocorrelation. This paper investigates the use of binary complementary pairs as a basis for NCPC. It shows that a pair of Manchester coded, N-element binary complementary sequences will yield a peak sidelobe (PSL) ratio of 1/(2N). 相似文献
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ARGOS and SARSAT are two satellite Doppler navigation systems in which low cost ground beacons transmit bursts of stable frequency signals. The Doppler shifted signals received by the satellite provide the positions of the beacons. The positioning error is dominated by a random component, due mainly to the short-term frequency stability of the beacon oscillator. Theoretical analysis and explicit expressions of the random errors are given. 相似文献
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The paper proposes a way to increase the energy within a coherent processing interval (CPI) using more pulses instead of longer pulses. Long coded pulses result in masking targets at close range and poor Doppler tolerance. Increasing the number of pulses implies high pulse repetition frequency (PRF), which suffers from range ambiguity and target folding. These drawbacks of a high PRF can be mitigated by inter-pulse coding. The approach suggested here should be attractive for close and mid range applications of radar, ground penetrating radar, ultrasound imaging, and more. 相似文献
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