Which guidance method tends to be short-range due to tracking errors at long distances?

Which guidance method tends to be short-range due to tracking errors at long distances?

• A. Laser beam rider.
• B. Active guidance with onboard radar.
• C. Semi-active guidance.
• D. Passive guidance.

Answer: (A)

Laser beam riding guides the missile by keeping it within a narrow laser beam projected from the launcher toward the target. The missile senses the beam and steers to stay centered in it until impact. As range increases, the beam naturally spreads (diverges) and atmospheric effects—turbulence, scattering, and weather—cause the beam to wander. Those factors turn small pointing or alignment errors into large lateral deviations at the missile, making precise tracking increasingly difficult. Because of this, reliable guidance degrades quickly with distance, so laser beam riding is typically used for short-range engagements where the beam remains tight and the missile can stay on course with minimal error.

Laser beam riding guides the missile by keeping it within a narrow laser beam projected from the launcher toward the target. The missile senses the beam and steers to stay centered in it until impact. As range increases, the beam naturally spreads (diverges) and atmospheric effects—turbulence, scattering, and weather—cause the beam to wander. Those factors turn small pointing or alignment errors into large lateral deviations at the missile, making precise tracking increasingly difficult. Because of this, reliable guidance degrades quickly with distance, so laser beam riding is typically used for short-range engagements where the beam remains tight and the missile can stay on course with minimal error.