name: DD
full_form: Double Differential
context: carrier phase positioning is used: - For InF-SH scenario with 1cm ARP error and random initial phase: - (PRU 5m) DD UL-CPP (Case 47): 1.252cm @ 50% and 2.765cm @80% - For InF-SH scenario with 5cm ARP error and random initial phase: - (PRU 5m) DD UL-CPP (Case 48): 5.986cm @ 50% and 0.11879m @80% - Source [80] shows: - For InF-SH scenario with 1cm ARP error: - SD DL-CPP: 0.09m @50% and 0.20m @80%. - For InF-SH scenario with 5cm ARP error: - SD DL-CPP: 0.18m @50%and 0.28m @80% - Source [81] shows: - For InF-SH scenario with 1cm ARP error: - DD DL-CPP (Cases 11): <1.0cm @50% and 11.2cm @80%. - DD DL-CPP (two subcarrier frequencies within one PFL) (Case 12): <1.0cm @50% and 1.79 cm @80%. - DD DL-CPP (two carrier frequencies) (Case 13): <1.0cm @50% and 1.3cm @80%. - For InF-SH scenario with 5cm ARP error: - DD DL-CPP (two carrier frequencies, two PFLs) (Case 15): 3.3cm @50% and 5.6cm @80%. - For InF-DH scenario with 1cm ARP error: - DD DL-CPP (two carrier frequencies, two PFLs) (Case 17):
description: Double Differential (DD) is a technique used in carrier phase positioning for precise location determination in 5G networks. It involves using differential measurements between signals to improve accuracy.
explanation: The description explicitly states that DD is a 'technique used in carrier phase positioning', which is a specific method for determining location. This places it within the category of Positioning Techniques.
section_title: 6.3.2Summary of evaluations for NR carrier phase positioning
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