Fig.1

Classification diagram of existing radio proximity fuze anti-information interference technology"

Table 1

Relationship between the period of m sequence, M sequence and the primitive polynomial series n"

Fig.2

Principle block diagram of pulse Doppler fuze based on M sequence pseudo-code phase modulation"

Fig.3

Hardware diagram of radio fuze"

Fig.4

Brief development diagram of phase modulation and frequency modulation"

Fig.5

Ambiguity function diagram of chaotic sequence modulation signal and m sequence modulation signal"

Fig.6

Attenuation characteristic diagram of radio signal in the atmosphere"

Table 2

Minimum power required to detect different distances  dBm"

Fig.7

Physical picture of terahertz radar test system"

Fig.8

Physical picture of terahertz radar transceiver module"

Fig.9

UWB radio fuze prototype"

Fig.10

Anti-interference workflow of echo signal processing"

Fig.11

Flowchart of deception jamming recognition"

Fig.12

Recognition process of deception jamming based on polarization characteristics"

Fig.13

Workflow of spoofing interference recognition"

Fig.14

Fuze interference recognition network structure based on deep learning"

Fig.15

Working process of adaptive filter to realize signal separation"

Fig.16

Flowchart of SMSP jamming countermeasure"

Table 3

Summary of advantages and disadvantages of each single system fuze"

Fig.17

Principle block diagram of composite fuze"

Fig.18

Antenna principle diagram of composite detection fuze"

Fig.19

Principle block diagram of composite detection fuze"

Fig.20

Ranging information decision process of laser and radio"

Fig.21

Composite fuze prototype of "radio signal and laser signal""

Fig.22

Distribution schematic diagram of electrode array and antenna array"

Fig.23

Block diagram of radio and electrostatic compound directional detection fuze system"

Fig.24

Block diagram of cognitive electronic warfare system"

Fig.25

Hierarchical architecture of cognitive electronic warfare system"

Fig.26

Cycle model of "perception-recognition-decision-action""

Fig.27

Anti-jamming model of radio cognitive fuze"

Fig.28

Working mode of off-line training and on-line decision mode of cognitive anti-jamming model for radio fuze"

Fig.29

Foreign typical missiles with intelligent characteristics"

Fig.30

Schematic diagram of FDA-MIMO transmission array"

Fig.31

Comparison diagram of FDA-MIMO transmission beams affected by Δf"

Fig.32

Comparison of array pattern diagram between FDA and phased array"

Fig.33

Direction finding principle of one-dimensional single baseline phase interferometer system"

Fig.34

Amplitude pattern of adjacent antennas"

Fig.35

Technology classification diagram of low intercept point-like beamforming"

Fig.36

Three-dimensional array diagram of FDA-MIMO"

Fig.37

Projection diagram of point-like transmission beam part of pulse signal hemispherical FDA- MIMO using linear incremental frequency offset at (150 km, 20°, 35°)"

Fig.38

Array structure of PFDA"

Fig.39

Beam pattern"

Fig.40

Two-dimensional spatial structure diagram of arc FDA antenna"

Table 4

Summary table of the difference between arc array and traditional array"

阵列类型	弧形频控阵	传统频控阵
波束合成模式
波束合成控制	适当的相位补偿	不需要相位补偿
阵元工作情况	部分阵元工作	全部阵元工作
阵元间距	不均匀分布	等间隔均匀分布
阵元之间的频率偏移	存在	存在
目标方向的阵元远场矢量	不同	相同

Fig.41

Cross subarray FDA array"

Fig.42

Logarithmic frequency offset FDA-MIMO beam pattern"

Fig.43

Schematic diagram of optimization criteria"

Fig.44

Transmit-receive spatial frequency distribution schematic diagram of FDA radar"

Fig.45

Flowchart of main lobe distance deception jamming suppression"

Fig.46

Result of algorithm simulation estimation and true target positions"

Fig.47

Single-frequency FDA radar prototype developed by Antonik P"

Fig.48

FDA radar transmission module device design picture and physical objects"

Fig.49

Physical layer secure communication test platform based on FDA"

Fig.50

FDA prototype and its simulation system"