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What (who) is terrain-contour matching - definition
MISSILE NAVIGATION SYSTEM
Tercom; Terrain Contour Matching; DSMAC; Digital Scene-Mapping Area Correlator; Topographic guidance; Photographic guidance; TERCOM-Aided Inertial Navigation System; Terrain mapping; Terrain contour matching
TERCOM
Terrain contour matching, or TERCOM, is a navigation system used primarily by cruise missiles. It uses a pre-recorded contour map of the terrain that is compared with measurements made during flight by an on-board radar altimeter.
contour ploughing
FARMING PRACTICE OF PLOWING PERPENDICULAR TO SLOPES TO REDUCE SOIL EROSION
Contour bunding; Contour farming; Contour Farming; Contour ploughing; Contour planting
¦ noun ploughing along the contours of the land in order to minimize soil erosion.
Contour plowing
FARMING PRACTICE OF PLOWING PERPENDICULAR TO SLOPES TO REDUCE SOIL EROSION
Contour bunding; Contour farming; Contour Farming; Contour ploughing; Contour planting
Contour bunding or contour farming or Contour ploughing is the farming practice of plowing and/or planting across a slope following its elevation contour lines. These contour lines create a water break which reduces the formation of rills and gullies during times of heavy precipitation, allowing more time for the water to settle into the soil.
Wikipedia
TERCOM
Terrain contour matching, or TERCOM, is a navigation system used primarily by cruise missiles. It uses a contour map of the terrain that is compared with measurements made during flight by an on-board radar altimeter. A TERCOM system considerably increases the accuracy of a missile compared with inertial navigation systems (INS). The increased accuracy allows a TERCOM-equipped missile to fly closer to obstacles and at generally lower altitudes, making it harder to detect by ground radar.
