| 1. | The SDO system uses GPS and train speed integration to estimate position.
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| 2. | They were ordered to proceed to the best estimated position of the ships.
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| 3. | The remaining search space is reduced to the part before or after the estimated position.
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| 4. | By mid-December the estimated position was from Wrangel Island.
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| 5. | During the night, Warwick ordered his cannons to continually bombard the estimated position of the Yorkists'encampment.
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| 6. | By comparing the fix and the estimated position corrections are made to the aircraft's heading and groundspeed.
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| 7. | While the destroyer steamed toward the estimated position of the sail, she searched for evidence of a submarine.
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| 8. | If there is no positional information available, a new dead reckoning plot may start from an estimated position.
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| 9. | The three destroyer escorts tracked the U-boat, raining down a barrage of depth charges on her estimated positions.
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| 10. | Thus a regular grid pattern should be obtained if the estimated position is perfectly linear with the true position.
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