http://www.fas.org/man/dod-101/navy/docs/fun/part07.htm
SAR, commonly used in aircraft and more recently in ships, is sometimes called side-looking radar or SLR. In SLR, the platform travels in a straight path with a constant velocity. Its radar antenna is mounted so as to radiate in the direction perpendicular to the direction of motion. SARs in this configuration can be used to gain imaging data of the earth's surface in order to provide a maplike display for military reconnaissance, measurement of seastate conditions, and other high resolution applications.

不能因為空軍軍機上的搜索雷達具有合成孔徑雷達成像技術就說沒有合成孔徑雷達，或說合成孔徑雷達只是依種技術而沒有雷達實體
請注意"SAR, commonly used in aircraft and more recently in ships, is sometimes called side-looking radar or SLR."這句話
以及"SARs"(複數)