Identification of wave where inversion occurs

Discussion in 'General GPS Discussion' started by Glenn, May 24, 2017.

  1. Glenn

    Glenn

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    Hello
    Currently wi-fi and mobile networks are operating on wave inversions that occur 8 times in every single wave.
    GPS uses a wave inversion that occurs on one wave every 1538 waves, which is the length of each PRN bit. These waves are 190 mm long, so with a consumer grade error of +/- 3 metres it is taking the receiver 15 waves to notice that the inversion has occurred, and the best non-RTK receivers, with 1 metre accuracy, are taking 5 full waves before they notice the inversion has occurred.
    Can anyone advise the technical details, or any books/articles on such, and what recent advances are occurring in this area?
    I take it that something as simple as utilizing 2 channels, one generating a wave on the base frequency and alignment and the other generating a 180° offset wave (inverted), has been tried and doesn't lower the number of waves required to identify the inversion but I would appreciate technical understanding
    Thanks for your time
    Glenn
     
    Glenn, May 24, 2017
    #1
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