Heads-Up Display Modes 35 - Metaboli
Heads-Up Display Modes 35 - Metaboli
Heads-Up Display Modes 35 - Metaboli
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Air Combat Basics 117<br />
post sends guidance commands to the SAM. Long-range SAM systems such as<br />
the S-300 (SA-10B Grumble) usually employ this type of command guidance in<br />
mid-course.<br />
Command Guidance Sends Course <strong>Up</strong>dates to the Missile<br />
Beam-Rider Guidance<br />
Semi-active, beam-rider guidance is somewhat similar to command guidance<br />
along the line of sight between the target and the tracking radar, except that the<br />
missile guidance system is designed to seek and follow the center of the<br />
guidance beam automatically, without specific correction instructions from the<br />
launching platform. The guidance beam is provided by a ground-based targettracking<br />
radar, and “highlights” the direction to the target. Like command<br />
guidance systems, beam-rider SAM systems are not limited to daylight and goodweather<br />
conditions.<br />
Beam-Riding Missiles Follow the Guidance Beam to the Target.<br />
One problem with beam-rider systems, as with command ones, is that the SAM<br />
must have high maneuverability in order to intercept an evasive target. As they<br />
approach the target, beam-rider missiles often must tighten their turns continually<br />
to keep up. Using two radars, one for target tracking and a second for missile<br />
tracking and guidance, can reduce this problem somewhat by providing a more<br />
efficient lead trajectory. Beam-rider guidance is usually more accurate and fasterreacting<br />
than command guidance systems.