Simulation system for receiving marine AIS signal onboard and testing method

Abstract

The invention discloses an simulation system for receiving a marine AIS signal onboard, and a testing method. The simulation system comprises multiple AIS receivers, a summary processor, a flight simulator, and an AIS signal generator, wherein multiple AIS receivers are used for receiving a ship AIS signal, each AIS receiver is connected with a time service unit; multiple AIS receivers are connected with a summary processor through a communication network; the summary processor combines resolving data of multiple AIS receivers and deletes the redundancy data to form an AIS database; the flightsimulator controls the flight height and direction of the simulation aircraft so as to simulate the flight path of the real aircraft; the AIS signal generator computes all AIS signal received by theaircraft at this moment by combining an AIS database according to the aircraft location and moment sent by the flight simulator, and sends the computed AIS signals to a radio frequency signal generator to generate a very-high-frequency radio frequency signal. Through the simulation system disclosed by the invention, the problem that the big difference is existent between the simulation testing ofthe existing onboard AIS and the actual use condition can be solved, and the system can be used for the signal simulation and testing equipment development of the onboard AIS.

Description

technical field [0001] The invention relates to a signal simulation system and a test method, in particular to an airborne simulation system and a test method for receiving sea AIS signals. Background technique [0002] At present, a large number of ships are equipped with automatic identification system (Automatic Identification System, referred to as AIS) on-board equipment, which broadcasts the dynamic and static information of the ship to ships and shore stations in nearby waters through VHF channels, including ship codes. , position, course, speed and other ship dynamic information, as well as ship static information such as ship name, call sign, draft and dangerous goods, so that adjacent ships and shore stations can timely grasp the course situation of all ships on the nearby sea surface and improve shipping safety. [0003] AIS works on the VHF channel. The general radio transmission characteristic of VHF is line-of-sight transmission. The receiving distance of ships...

AI Technical Summary

Problems solved by technology

[0029] The technical problem to be solved by the present invention is to provide an airborne simulation system and test method for receiving AIS signals at sea, which can simulate the areas where AIS signals are dense in coastal ships, and solve the problem of current airborne AIS simulation testing and actual use. Problems with large differences, which can be used for signal simulation and test equipment development of airborne AIS

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