Systems Engineering and Electronics ›› 2025, Vol. 47 ›› Issue (6): 1833-1842.doi: 10.12305/j.issn.1001-506X.2025.06.12

• Sensors and Signal Processing • Previous Articles     Next Articles

Unknown radar modulation mode recognition algorithm based on DBO-DAOD

Benhui ZHANG1, Songtao LIU2,*, Yulong CHAO3   

  1. 1. Department of Warship Command, Dalian Naval Academy, Dalian 116018, China
    2. Department of Information System, Dalian Naval Academy, Dalian 116018, China
    3. Unit 92896 of the PLA, Dalian 116018, China
  • Received:2024-04-19 Online:2025-06-25 Published:2025-07-09
  • Contact: Songtao LIU

Abstract:

With the emergence of various new radars and the use of wartime reservation mode, the actual battlefield electromagnetic environment is becoming more and more complex. Radar modulation signals with unknown types and sudden changes in parameters likely appear, which bring great challenges to the existing modulation mode recognition algorithms. In this regard, the influence mechanism of radar modulation "unknown" on the recognition results is analyzed, and the distribution alignment with open set difference (DAOD) algorithm is introduced into the field of radar modulation mode recognition, and a specific application scheme is designed. The dung beetle optimizer (DBO) algorithm is used to optimize the parameters of DAOD algorithm to solve the problem of prior knowledge and heuristic selection needed by DAOD algorithm. The simulation results show that the Accuracy and F-measure can reach 91.34% and 95.11% in the case of single unknown radar modulation mode. The Accuracy and F-measure are 91.37% and 93.69% in the case of multiple unknown radar modulation mode. Compared with DAOD algorithm, the above results increase by 3.77%, 1.83%, 21.17% and 12.06%, respectively. Therefore, DBO-DAOD algorithm can effectively improve the recognition rate of unknown radar modulation modes.

Key words: distribution alignment with open set difference (DAOD), dung beetle optimizer (DBO) algorithm, unknown modulation mode recognition, influence mechanism

CLC Number: 

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