There was absolutely no margin for error, even though the race looked in the GB trio's pocket from the moment they crossed the line in the qualifying round in a world-best time - there is no official world record because track dimensions can vary and this event is over exactly three laps.
Depending on the typical track dimensions, as determined in preliminary experiments, the number of plated cells, and the time of incubation were calibrated to maximize the number of single, non-intersecting cell tracks.
Although current track dimensions are of ~200μm × 4.3mm, smaller dimensions may suffice, particularly if the index span Δn is small: for instance in many cases a thin biological layer induces a less than 10−2 10−3 equivalent RIU change, so on the order of Δ m ~ 1 micropad shift.
Light from the scene is focused onto an uncooled microbolometer detector array through a stationary interferometer, causing the light incident at each detector at any instant in time to be phase shifted by an optical path difference which varies linearly across the array in the along-track dimension.
In our HMM models, we take the down-track dimension as the time variable (i.e., y corresponds to time in the HMM model).
The physical aperture is mounted to an imaging platform, which travels along a pre-determined rectilinear trajectory passed to the area of interest, the so-called along-track dimension.
The other most preferred tracking dimension was physical activities (80%), such as daily activities, exercises, and changes in the body like muscle gain, abdominal muscles, forearms, burning calories, bulking, heart rate, blood pressure, and dehydration levels.
Leakage may be mitigated, and the PSD resolution ("point target response", PTR) shaped, by employing a spectral window, in either or both of the range and along-track dimensions.
Tracking dimensions included fitness and physical health.
NC and EX preferred somewhat different tracking dimensions for the self.
