Adaptive communication method between airship and ship in near space based on AIS

Abstract

The invention discloses a near space airship and ship self-adaptive communication method based on an AIS. The method comprises the following steps that a near space airship receives an AIS message sent by a ship and obtains longitude and latitude coordinates of the ship, converts longitude and latitude coordinates of the ship into polar coordinates of the near space airship under a polar coordinate system taking the sea level projection point as an original point; the near space airship determines and adjusts the transmitting power and the beam direction of the signal transmitting terminal according to the polar coordinates; and the near space airship receives the AIS message sent by the ship in real time, and automatically adjusts the transmitting power and the wave beam direction of thesignal transmitting terminal in real time according to the longitude and latitude coordinates of the ship and the change of the corresponding polar coordinates. According to the AIS-based near space airship and ship adaptive communication method, the transmitting power and the wave beam angle of the near space airship can be adjusted in real time, so that the power consumption of the near space airship is reduced and the energy pressure of the near space airship is relieved under the condition of ensuring the communication quality.

Description

technical field [0001] The invention relates to the technical field of maritime communication, in particular to an AIS-based adaptive communication method between airships and ships in near space. Background technique [0002] Near space refers to the airspace 20 to 100 kilometers from the ground. Near space airship is a kind of near space aircraft that uses the buoyancy of the aircraft itself to overcome gravity, so as to carry out long-term operations in near space. At present, the near space airship is mainly used It is used in communication relay, ground monitoring and air defense alert. [0003] Compared with communication satellites, airships in near space have the advantages of short communication distance, long visible time, less propagation loss and small propagation delay; compared with shore-based communication stations, they have large coverage, long range, It has the advantages of flexible maneuverability and flexible deployment according to mission needs; for ...

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Problems solved by technology

[0004] When the near-space airship is used as a relay communication platform, in order to ensure that the signal quality reaching the ship at sea meets the communication quality requirements, the existing near-space airship transmits communication signals in the form of the maximum transmission power; however, the power of the near-space airship is determined by Provided by the solar power system, the energy acquisition means and capabilities are limited, and the energy of the airship in the near space is limited. When the airship in the near space uses the maximum transmission power to transmit communication signals, it will cause energy waste and increase the energy pressure of the airship in the near space.

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