Research on AIS Signal and Interference Signal Generated by AWG Simultaneously
Mingju Gong, Qilin Wang, Chen Dong, Haojie Zhou, Sheng Wang, Yi Zhao · 2018
Signal needs to co-exist with interference signal simultaneously when measuring the Anti-intermodulation interference capability of AIS receiver. The common scheme uses an AWG (arbitrary waveform generator) and several signal sources to produce AIS signal and interference signal. This paper proposes a scheme that one AWG generates AIS signal and interference signal concurrently, and the theoretical simulation of the scheme shows the scheme is reasonable and feasible. Compared with the common scheme, the scheme greatly reduces the cost of the instrument, overcomes third-order interactive modulation distortion between the signal sources in theory and enhances the signal quality.