A satellite-borne AIS and ADS-B integrated receiver system based on a micro-nano satellite

Abstract

The invention discloses a satellite-borne AIS and ADS-B integrated receiver based on a micro-nano satellite. The satellite-borne AIS and ADS-B integrated receiver sysstem comprises an antenna module,a radio frequency front end module and a digital signal processing module composed of a high-speed analog / digital converter and a system-on-chip SoC, and And synchronous receiving and efficient processing of the AIS and ADS- B signals are achieved. The receiver receives the mixed signals of AIS and ADS-B and performs RF filtering amplification on the signals.; the obtained signal is sent to a signal processing unit and is sampled by a high-speed analog / digital converter; the message is input into a SoC platform to carry out digital down conversion, signal separation and decimation filtering, and frame header burst detection, frequency offset estimation, signal demodulation, data decoding and other processing are carried out on the obtained message and then CRC (Cyclic Redundancy Check) iscarried out, and finally the required AIS (Automatic Identification System) and ADS-B data are obtained. The integrated receiving design is adopted, the size and weight of on-satellite loads and the power consumption of a receiver are effectively reduced, high integration is achieved, and the method is more suitable for being applied to micro-nano satellites.

Description

technical field [0001] The invention belongs to the technical field of aerospace and marine wireless communication, and in particular relates to a spaceborne AIS and ADS-B integrated receiver system based on micro-nano satellites. Background technique [0002] In today's era, maritime and civil aviation traffic information data is a very important element in big data. Maritime and air traffic management departments can analyze and extract the trajectories of marine ships and civil aviation aircraft by obtaining massive and multi-dimensional maritime and civil aviation traffic information, so as to realize effective traffic supervision, improve the traffic safety level of marine ships and civil aviation aircraft and En-route capacity at sea and in the air. [0003] At present, the best way to obtain traffic information data of ships at sea and civil aviation aircraft is to use their respective automatic identification systems to monitor related activities. The automatic ide...

AI Technical Summary

Problems solved by technology

To sum up, the ground surveillance network cannot achieve large-scale, long-distance communication data reception

[0005] Micro-nano-satellites have high functional density, short development cycle, low cost, and flexible launch. However, with the increasing application requirements, the payload functions of micro-nano-satellites are increasingly enhanced, with more and more types, and related technologies are becoming more and more complex. This leads to the increase in the weight and volume of micro-nano satellites, which increases the cost of micro-nano satellites, increases the risk of launch, and loses the technical advantages of micro-nano satellites over large satellites.

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