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Extracting flight path information: flight-path is also a good feature reflecting the character of the flying target. The identification labels of flying targets correlate with the characteristics of those flight paths. For instance: domestic flights must operate along the flight paths between domestic airports; international flights must operate along the flight paths which cross the country ¡¦
We suggest the method to extract information from the flight path by supplementing the information of the flight path crossing each cell in the discretized latitude-longitude grid. For example, if cell (0, 0) has 3 flight paths A, B, C cross it, the flight path information of the cell (0, 0) is (A, B, C)
The principle of extracting flight path features includes:
• The information of the flight path crossing each cell in the discretized latitude-longitude grid.
• Each flight path is assigned to a dimension of feature space, it is encoded by binary method with two values 0 and 1.
• To be specific: if the flying target does not follow a particular flight path, this one is encoded as 0; if the flying target follows a particular flight path, this one is encoded as 1.
For example, if we have totally three available flight paths: A, B, and C, hence the feature space will have three dimensions. If the flying target is a plane following A path, its feature will be encoded as (1,0,0), similarly, B and C one will be encoded as (0,1,0) and (0,0,1) and (1,1,1) for the whole three paths. In our work that applied in Vietnam, there are 78 flight paths, hence flight path information for each plane flying target will be encoded in 78 dimensions of the feature space. |
IEEE/ICACT20220272 Slide.08
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