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ONLINE NAVIGATIONAL DRIFT CORRECTION FOR METROLOGY MEASUREMENTS
ONLINE NAVIGATIONAL DRIFT CORRECTION FOR METROLOGY MEASUREMENTS
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机译:用于计量测量的在线导航漂移校正
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摘要
A field-of-view at a first modeled target location of a first target disposed on a specimen can be configured, which can include moving the stage relative to the detector. The first modeled target location is determined by summing a first design target location and a navigational error provided by an online model. A first image of the field-of-view is grabbed using the detector. The field-of-view at a second modeled target location of a second target disposed on the specimen is configured. Concurrent with configuring the field-of-view at the second modeled target location, using a processor, the position of a first actual target location is determined using the first image. The online model is updated with a difference between the first design target location and the first actual target location.
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