Our article seems to account for its decline by " the replacement of mouseballs by direct optical tracking ", but from an ergonomic point of view this doesn't seem to tell the whole story.
32.
A few older designs use purely optical tracking and command guidance, perhaps the best known example of this is the British " Rapier " system, which was initially an all-optical system with high accuracy.
33.
All the Skystreaks were initially painted scarlet, which led to the nickname " crimson test tube . " NACA later had the color of the Skystreaks changed to white to improve optical tracking and photography.
34.
Depending on the design of the optical tracking system, the optical imaging system can vary from as simple as a standard digital camera to as specialized as an astronomical telescope on the top of a mountain.
35.
The paper " Deconstructing the Rebound with Optical Tracking Data " by Rajiv Maheswaran was awarded the Grand Prize . " CourtVision : New Visual and Spatial Analytics for the NBA " by Kirk Goldsberry received second place.
36.
Many improvements over the original system were made; these included the addition of a second fire control channel, allowing two targets to be engaged at once; as well as upgrades to the optical tracking system and computer equipment.
37.
They modified launchers of SA-6 surface-to-air missiles with optical tracking equipment to allow them to hit targets without using ground guidance radars, and added fuel cells to SA-3 missiles to extend their range to reach high-flying U-2 spyplanes.
38.
The JB-2 was used for development of missile guidance control and seeker systems, testing of telemetering and optical tracking facilities, and as a target for new surface-to-air and air-to-air missiles ( fulfilling the V1's covername, " Flakzielger�t " anti-aircraft target device ).
39.
There is also a backup low-light optical tracking system for heavy Mach 2.4 ( peaking at around Mach 3 ) for a maximum target engagement speed of around Mach 1.4 for the original missile and Mach 1.6 for the M2 \ M3 missiles.
40.
The JB-2 was used for development of missile guidance control and seeker systems, testing of telemetering and optical tracking facilities, and as a target for new surface-to-air and air-to-air missiles ( ironically fulfilling the former V1's covername, " Flakzielger�t " anti-aircraft target device ).
