Hybrid data conversion tracking method for weight balance Poisonus codes
A mixed data and balanced technology, applied in the field of deep space pseudocode ranging, can solve problems such as complex ranging process, and achieve the effect of increasing loop stability, reducing loop jitter, and improving stability.
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[0052] In the development process of a parametric baseband processing chip using the hybrid data conversion tracking method, after applying this method, the T2B regeneration pseudo code is realized at an input power of -140dBm, which not only realizes fast capture and tracking, but also reduces the phase detection error increased by 3.5dB, and the ranging jitter was reduced by 3dB.
[0053] In the present invention, when the tracking state is in the unlocked state during code clock tracking, the C1 code sequence is used for phase identification with the in-phase and middle-phase branch correlation integral input loops; when the tracking state is in the pre-locked state during code clock tracking, the unlocked The fully synchronous pseudo-code sequence is simultaneously integrated with the in-phase and middle-phase branches to input the phase detection loop; it is proposed to use the C1 code sequence to correlate with the same-phase and middle-phase branches in the initial state...
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