基于DBO-DAOD的未知雷达调制方式识别算法

doi:10.12305/j.issn.1001-506X.2025.06.12

Abstract

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:

TN973

Benhui ZHANG, Songtao LIU, Yulong CHAO. Unknown radar modulation mode recognition algorithm based on DBO-DAOD[J]. Systems Engineering and Electronics, 2025, 47(6): 1833-1842.

Figures/Tables 7

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雷达调制波形	参数	取值范围
Rect	f_c N	U(f_s/6, f_s/5) U[500, 1 920]
LFM FMCW	f_c BN	U(f_s/6, f_s/5) U(f_s/20, f_s/16) U[500, 1 920]
Barker	L_Bc f_c N_cc	{7, 11, 13} U(f_s/6, f_s/5) U[11, 14]
Frank P1	f_c N_cc M	U(f_s/6, f_s/5) {4, 5, 6} {6, 7, 8}
P2	f_c N_cc M	U(f_s/6, f_s/5) {4, 5, 6} {6, 8}
P3 P4 PX Zadoff-Chu	f_c N_cc m	U(f_s/6, f_s/5) {4, 5, 6} {39, 49, 64}
MFSK	f_c B L_Bc N	U(f_s/6, f_s/5) U(f_s/20, f_s/16) {6, 10, 12} U[500, 1 920]

信道参数	取值
采样频率/MHz	F_s=100
多径衰减/s	{0.1, 1.8, 3.4}/F_s
平均路径增益/dB	{0, －2, －10}
K-factor	4
最大多普勒频移/Hz	4
AWGN/dB	SNR=[-6∶6∶30]

波形名称	DAOD(验证集)		DBO-DAOD(训练集)		DBO-DAOD(验证集)
波形名称	Accuracy	F-measure	Accuracy	F-measure	Accuracy	F-measure
Zadoff-Chu	85.428 6	92.141 8	99.91±0.09	99.95±0.05	85.3±7.79	91.68±4.55
Rect	85.571 4	92.224 8	100±0	100±0	96.66±6.34	98.16±3.49
Px	85.285 7	92.058 6	91.83±2.37	95.09±1.29	95.12±3.13	97.15±1.66
P4	85.285 7	92.058 6	92.31±2.69	95.56±1.53	87.25±4.13	92.91±2.14
P3	85	91.891 9	91.50±6.81	95.41±3.67	86.46±7.24	92.40±4.20
P2	98.857 1	99.328 9	99.85±0.02	99.91±0.01	97.25±2.81	98.34±1.73
平均值	87.57	93.28	95.90±5.10	97.65±2.86	91.34	95.11

开放度	KNN		CAPLS		CD-OSR		DAOD		DBO-DAOD
开放度	Accuracy	F-measure	Accuracy	F-measure	Accuracy	F-measure	Accuracy	F-measure	Accuracy	F-measure
0	86.17	91.01	93.83	96.35	0	NaN	99.83	99.90	100±0.0	100±0
0.039 2	73.86	84.96	82.00	90.11	14.29	NaN	85.43	92.14	87.31±6.97	92.91±3.98
0.074 2	64.62	78.51	72.62	84.14	25	NaN	74.88.	85.63	86.52±7.17	91.55±4.42
0.105 6	57.44	72.97	64.78	78.62	33.33	NaN	66.33	79.76	96.52±4.42	97.41±3.29
0.134 0	51.70	68.16	57.70	73.18	40	NaN	59.70	74.77	92.15±6.50	93.85±3.28
0.159 8	47.00	63.95	51.64	68.11	45.45	NaN	53.91	70.05	88.42±6.87	90.37±4.56
0.183 5	43.08	60.22	47.67	64.56	50	NaN	56.00	69.19	88.68±5.05	89.74±3.90
平均值	60.55	74.25	67.18	79.30	29.72	NaN	70.2	81.63	91.37	93.69

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Unknown radar modulation mode recognition algorithm based on DBO-DAOD

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