Displaying Number of Accesses in a Graphics Window

Measuring Number of Accesses

Number of Accesses measures the number of independent accesses of points. The dynamic definition of Number of Accesses is the number of assets accessible at the current time.

Compute options for Number of Accesses

Option	Description
Average Per Day	The total number of accesses over the entire coverage interval divided by the number of days in the coverage interval
In Span	The number of accesses reported between the Minimum and Maximum duration specified over the entire coverage interval
In Span Per Day	The number of accesses reported between the Minimum and Maximum duration divided the number of days in the coverage interval
Maximum Per Day	The maximum number of accesses per calendar day
Minimum Per Day	The minimum number of accesses per calendar day
Total	The total number of accesses over the entire coverage interval. STK computes the total number of accesses over the coverage interval without considering overlapping accesses. A grid point with a single access to each of two satellite, even if the access to the second satellite is entirely within the span of the access to the first satellite, would be measured as having two accesses. Another example is provided in the following diagram:

Calendar days are measured from midnight to midnight UTC.

Displaying Number of Accesses in a Graphics Window

Graphics are used to represent the static and dynamic value of Number of Accesses. Graphics representing the dynamic values are only displayed during animation. If Satisfaction is enabled, the graphics follow the general behavior for satisfaction graphics. If Satisfaction is disabled, the graphics appear as described in the following table:

Static or Animation?	Grid points highlighted if they...
Static	are covered by at least one asset at some point during the coverage interval
Animation	are currently covered by at least one asset

The Satisfaction Threshold value is number of accesses that must be met if coverage is considered to be satisfied. The default behavior of this Figure Of Merit corresponds to a Satisfaction setting of Greater Than 0.

Animation graphics for Number of Accesses do not follow the standard pattern when Accumulation graphics are set to Up to Current or Not Up to Current. In these cases, the dynamic definition of the Figure Of Merit reports the static value of the Figure Of Merit where the end of the coverage interval has been reset to the current animation time for use in animation graphics. This change in definition is restricted to the graphics and does not affect data provided in reports. The result of this behavior is that the dynamic and static satisfaction graphics are identical at the end of the coverage interval.