4 ms·
GPS was created for U.S. nuclear subs. The problem is about knowing where the sub exactly surfaces, because after launch, the trajectory is ballistic. Subs have
by vlehto 11y ago
GPS was created for U.S. nuclear subs. The problem is about knowing where the sub exactly surfaces, because after launch, the trajectory is ballistic. Subs have very good inertial navigation, but the accuracy deteriorates with time and movement.
TERCOM is very nice, but only applicable for cruise missiles flying close to ground and able to change their course.
- maxerickson 11y agoYes yes, the cruise missile thing was just pointing out that there are some quite advanced non satellite capabilities. The more important point is the question of whether GPS is actually required for a launch or if it merely improves the process (accuracy, speed, etc).