Divergence-based pulse group extracting and inter-pulse modulation parameter estimation of multifunction radar pulse sequences

TY - JOUR

T1 - Divergence-based pulse group extracting and inter-pulse modulation parameter estimation of multifunction radar pulse sequences

AU - Zhou, Zixiang

AU - Fu, Xiongjun

AU - Dong, Jian

AU - Gao, Meijing

AU - Lang, Ping

N1 - Publisher Copyright: © 2025 Elsevier B.V.

PY - 2026/4

Y1 - 2026/4

N2 - Currently, multi-function radars (MFRs) are characterized by low probability interception, flexible beam control, and rapidly changing operation modes with pulse groups as basic units, which pose a severe challenge for electronic support (ES) systems to accurately analyzing the MFR pulse sequences. Developing a pulse group extracting and analyzing method that minimizes reliance on prior information and demonstrates high robustness to non-ideal conditions is crucial for further recognition of the MFR operation mode. This article proposes a divergence-based pulse group extracting and inter-pulse modulation parameter estimation of MFR pulse sequences method, i.e., DPEME. It can sequentially perform outlier removal and parameter reconstruction, pulse group extracting, and inter-pulse modulation parameter estimation of non-ideal MFR pulse sequences, which can mitigate the ”batch increase” and ”batch reduction” effects in unsupervised pulse group extracting. The simulation results of non-ideal pulse sequences with six modulation types show that DPEME can achieve superior and more robust unsupervised pulse group extracting performance compared to several existing state-of-the-art methods.

AB - Currently, multi-function radars (MFRs) are characterized by low probability interception, flexible beam control, and rapidly changing operation modes with pulse groups as basic units, which pose a severe challenge for electronic support (ES) systems to accurately analyzing the MFR pulse sequences. Developing a pulse group extracting and analyzing method that minimizes reliance on prior information and demonstrates high robustness to non-ideal conditions is crucial for further recognition of the MFR operation mode. This article proposes a divergence-based pulse group extracting and inter-pulse modulation parameter estimation of MFR pulse sequences method, i.e., DPEME. It can sequentially perform outlier removal and parameter reconstruction, pulse group extracting, and inter-pulse modulation parameter estimation of non-ideal MFR pulse sequences, which can mitigate the ”batch increase” and ”batch reduction” effects in unsupervised pulse group extracting. The simulation results of non-ideal pulse sequences with six modulation types show that DPEME can achieve superior and more robust unsupervised pulse group extracting performance compared to several existing state-of-the-art methods.

KW - Inter-pulse modulation

KW - Multifunction radar

KW - Outlier removal

KW - Pulse group extracting

UR - https://www.scopus.com/pages/publications/105021049147

U2 - 10.1016/j.sigpro.2025.110388

DO - 10.1016/j.sigpro.2025.110388

M3 - Article

AN - SCOPUS:105021049147

SN - 0165-1684

VL - 241

JO - Signal Processing

JF - Signal Processing

M1 - 110388

ER -