Wavefront aberration caused by atmospheric turbulence weakens the capability of imaging optical system. Artificial beacon is used to correct the aberration successfully.
应用信标技术可以降低大气湍流对光学系统的影响，人造信标是主动校正大气造成的波面相位畸变的重要手段。
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The beacon emits a visible optical signal (310), thus transmitting position data.