Systems and methods for active frequency table (AFT) generation

摘要

A system and method are provided for generating and/or refining an active frequency table (AFT) for High Frequency Data Link (HFDL) communications, particularly those communications managed by a network of HFDL ground stations. Automated analysis is applied to forecast atmospheric conditions to generate an AFT for the HFDL communication network for one or more particular time windows. Historical analysis of measured atmospheric conditions is consulted to provide an approximation of an AFT. The use of the historical data includes determining, in a past time frame, when an atmospheric conditions most closely compares to the measured or forecast conditions. Reference is then be made to stored information regarding one or more AFTs that were effectively employed in the past time frame under the comparable conditions to generate an appropriate AFT according to the measured or forecast conditions.

主权项

1. A method for generating an active frequency table (AFT) for a plurality of high frequency (HF) ground communication sites, comprising:
collecting, with a processor, forecast atmospheric condition information in a vicinity of a plurality of HF ground communication sites; selecting, with the processor, a relatively best HF frequency to support HF radio wave propagation for communications with each of the plurality of HF ground communication sites from separate sets of discrete licensed HF frequencies for the each of the HF ground communication sites, the selecting comprising:
isolating a past time frame in which atmospheric conditions in the vicinity of at least one of the plurality of HF ground communication sites were comparable to the collected forecast atmospheric condition information in the vicinity of the at least one of the plurality of HF ground communication sites;determining a past relatively best HF frequency that was employed by the at least one of the plurality of HF ground communication sites during the past time frame; andsetting that past relatively best HF frequency as the relatively best HF frequency to support the HF radio wave propagation for communications with the at least one of the plurality of HF ground communication sites; deconflicting, with the processor, potential interference between the selected relatively best HF frequency for at least one of the plurality of HF ground communication sites and the selected relatively best HF frequency for others of the plurality of HF ground communication sites; generating, with the processor, the AFT for the plurality of HF ground communication sites based on results of the selecting and the deconflicting; and transmitting the generated AFT to the plurality of HF ground communication sites for implementation.