Automatic identification system signal simulator

The utility model discloses an automatic identification system signal simulator including a power supply, a combiner, a VHF antenna, an AIS single source, at least one roadbed processing unit, at least one road radio frequency unit; the AIS single source is connected with the roadbed processing unit which is connected with the radio frequency unit, and the radio frequency is connected with the combiner which is connected with the VHF antenna; the AIS antenna, the roadbed unit, the radio frequency unit are connected with the power supply. The automatic identification system signal simulator can meet the needs that users send different messages according to various situations and various type equipments to save the development time as well as the financial and material resources at the same time.