Radar Signals With ZACZ Based on Pairs of D-Code Sequences and Their Compression Algorithm

Ipanov, Roman N.; Баскаков, А. И.; Olyunin, Nikolay; Ka, Min-Ho

doi:10.1109/lsp.2018.2867734

Cited by 20 publications

(13 citation statements)

References 10 publications

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“…3 and 4 illustrate the ambiguity function (AF)

R false(τ, F false)

of CCS and CCS‐LFSK, respectively. ZACZ width is

Z = N T_{0} false(q - 1 false)

[10, 11].…”

Section: Analysis Of Correlation Characteristics Of Ccs‐lfskmentioning

confidence: 99%

“…In [10,11], signals with ZACZ consist of a minimal number of pulses in the train (only two pulses), however, at mismatch in the Doppler frequency, they have a rather high side lobe (SL) level of ACF.…”

mentioning

confidence: 99%

“…In [10,11], the CCSs were considered, which have in both train pulses similar discrete values in the form of rectangular video-pulses. Such CCS has a high level of SL of ACF at mismatch in the Doppler frequency.…”

mentioning

confidence: 99%

“…3 and 4illustrate the ambiguity function (AF) R(t, F) of CCS and CCS-LFSK, respectively. ZACZ width is Z = NT 0 (q − 1)[10,11]. ACF of CCS and CCS-LFSK In…”

mentioning

confidence: 99%

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Signals with zero autocorrelation zone for the synthesised aperture radar

Ipanov

2019

Electron. lett.

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For the synthesised aperture radar, the radar signal with a zero autocorrelation zone (ZACZ) is synthesised, which represents a sequence from two phase-code shift keying (PCSK) pulses coded by adjacent pairs of the D-code with additional linear frequency shift-keying (LFSK) of the train pulse discrete value. A comparative analysis is performed of correlation characteristics of the synthesised signal with the signal without discrete modulation and the truncated M-sequence. Total correlation characteristics of the ensemble from four signals are also analysed. It is shown that in ZACZ, the level of all side lobes of the autocorrelation function (ACF) of the synthesised signal is less than the level of the ACF side lobes of the M-sequence. The total ACF of the ensemble of four signals both with modulation and without the discrete modulation has zero side lobes along with the whole time axis τ, and at mismatch in frequency in ZACZ, it has the side lobe level <−40 dB.

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“…3 and 4 illustrate the ambiguity function (AF)

R false(τ, F false)

of CCS and CCS‐LFSK, respectively. ZACZ width is

Z = N T_{0} false(q - 1 false)

[10, 11].…”

Section: Analysis Of Correlation Characteristics Of Ccs‐lfskmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

“…3 and 4illustrate the ambiguity function (AF) R(t, F) of CCS and CCS-LFSK, respectively. ZACZ width is Z = NT 0 (q − 1)[10,11]. ACF of CCS and CCS-LFSK In…”

mentioning

confidence: 99%

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Signals with zero autocorrelation zone for the synthesised aperture radar

Ipanov

2019

Electron. lett.

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“…The reported study was funded by RFBR and MCESSM according to the research project № 19-57-44001. Signals with ZACZ considered in [16] and [17] consist of a minimum number of pulses in the train, i.e. two pulses; however, at mismatch in the Doppler frequency, they have a high enough ACF SL level.…”

Section: Introductionmentioning

confidence: 99%

Phase-Code Shift Keyed Probing Signals with Discrete Linear Frequency Modulation and Zero Autocorrelation Zone

Ipanov¹

2020

Infocommunications journal

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Modern synthesized aperture radars (SAR), e.g. space SARs for remote sensing of the Earth, use signals with linear frequency modulation and signals with phase-code shift keying (PCSK) coded by M-sequence (MS) as probing signals. Utilization of PCSK-signals permits an essential improvement of the radar image quality at the stage of its compression on azimuthal coordinate. In this paper, probing signals with zero autocorrelation zone (ZACZ) are synthesized, which signals represent a sequence of two PCSK-pulses with additional linear frequency modulation of sub-pulses in the pulses. A comparative analysis of the correlation characteristics of the synthesized signal and the PCSK-signal coded by MS has been performed. It is shown that in ZACZ, at a mismatch in the Doppler frequency, the level of all side lobes (SL) of the autocorrelation function (ACF) of the synthesized signal is less than the ACF SL level of the PCSK-signal coded by MS. The total ACF of the ensemble of 4 signals has zero SL along the whole time axis τ, and at a mismatch in frequency in ZACZ, it has a lower SL level than the total ACF SLs of the ensemble of 4 PCSK-signals coded by MS.

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Signal Processing for Practical Applications

Favorskaya

Jain

2020

Advances in Signal Processing

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Radar Signals With ZACZ Based on Pairs of D-Code Sequences and Their Compression Algorithm

Cited by 20 publications

References 10 publications

Signals with zero autocorrelation zone for the synthesised aperture radar

Signals with zero autocorrelation zone for the synthesised aperture radar

Phase-Code Shift Keyed Probing Signals with Discrete Linear Frequency Modulation and Zero Autocorrelation Zone

Signal Processing for Practical Applications

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