| Automatic Dependent Surveillance-Broadcast(ADS-B) technology can realize the similar radar control, and it can also enhance the surveillance capacity with low cost in the radar coverage, which expands the surveillance range and improves the air transport safety, airspace capacity and operation efficiency. This is the main development tendency of future surveillance technology put forward by International Civil Aviation Organization.The paper mainly conducts a systematical study on ADS-B ground receiving technology of 1090 ES S. The paper mainly studies the general technology, hardware technology and digital signal processing of ADS-B receiving technologies. The paper gives the design of radio frequency receiving front-end, digital processing back-end and the hardware for Cat021 massage output of 1090 ES ADS-B receiving device. According to DO260 B, the paper gives an improved extended message receiving algorithm and the way to realize in FPFA and DSP.Finally, the functional simulation of FPGA key decoding algorithmic finished, and the whole machine testing environment is prepared simulator testing system, so that the testing verification of whole receiving device is realized in actual and simulator environment, and the testing results are shown in the ADS surveillance device of the upper computer. |
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