Fig.1

Schematic diagram of the proposed method"

Table 1

Simulation parameters setting"

Fig.2

Output of the sum beam"

Fig.3

Output of the sum beam with time-domain pulse compression"

Fig.4

Adaptive azimuth sum beam pattern with full range sampling"

Fig.5

Adaptive elevation sum beam pattern with full range sampling"

Fig.6

Output of the adaptive elevation sum beam with full range sampling"

Fig.7

Output of the adaptive azimuth sum beam with full range sampling"

Fig.8

Correlation coefficient between sum channel and azimuth difference channel"

Fig.9

Correlation coefficient between sum channel and elevation difference channel"

Fig.10

Correlation coefficient between azimuth difference channel and double difference channel"

Fig.11

Correlation coefficient between elevation difference channel and double difference channel"

Fig.12

Adaptive azimuth sum beam pattern with the proposed method"

Fig.13

Adaptive elevation sum beam pattern with the proposed method"

Fig.14

The output of the adaptive elevation sum beam with the proposed method"

Fig.15

The output of the adaptive azimuth sum beam with the proposed method"

Fig.16

Azimuth monopulse curve"

Fig.17

Elevation monopulse curve"

Fig.18

Target azimuth angle measurement RMSE (SNR=20 dB)"

Fig.19

Target elevation angle measurement RMSE (SNR=20 dB)"

Fig.20

Target angle estimation RMSE change curve via SNR"