21. The missile was an a two-stage rocket with inertial guidance , which could not be corrected after launch. 22. Inertial guidance systems accumulate errors over time.23. It also had an inertial guidance system, but midcourse updating was provided via a dual-band semi-active radar. 24. Missile guidance is by GPS or Inertial guidance system for pinpoint accuracy at ranges of up to. 25. Hal Laning and Richard Battin undertook the initial analytical work on the Atlas inertial guidance in 1954. 26. One use is in inertial guidance systems. 27. The missile uses stellar inertial guidance to provide a circular error probable ( CEP ) of 500 m. 28. Inertial guidance is difficult without computers.29. The HF-2E Block I missile uses inertial guidance with Global Positioning System ( GPS ) and TERCOM updates. 30. Work on the Redstone led to development of the first high-precision inertial guidance system on the Redstone rocket.
