TY - JOUR
T1 - PPP-RTK and inter-system biases
T2 - the ISB look-up table as a means to support multi-system PPP-RTK
AU - Khodabandeh, A.
AU - Teunissen, P. J G
PY - 2016/9/1
Y1 - 2016/9/1
N2 - PPP-RTK has the potential of benefiting enormously from the integration of multiple GNSS/RNSS systems. However, since unaccounted inter-system biases (ISBs) have a direct impact on the integer ambiguity resolution performance, the PPP-RTK network and user models need to be flexible enough to accommodate the occurrence of system-specific receiver biases. In this contribution we present such undifferenced, multi-system PPP-RTK full-rank models for both network and users. By an application of S-system theory, the multi-system estimable parameters are presented, thereby identifying how each of the three PPP-RTK components are affected by the presence of the system-specific biases. As a result different scenarios are described of how these biases can be taken into account. To have users benefit the most, we propose the construction of an ISB look-up table. It allows users to search the table for a network receiver of their own type and select the corresponding ISBs, thus effectively realizing their own ISB-corrected user model. By applying such corrections, the user model is strengthened and the number of integer-estimable user ambiguities is maximized.
AB - PPP-RTK has the potential of benefiting enormously from the integration of multiple GNSS/RNSS systems. However, since unaccounted inter-system biases (ISBs) have a direct impact on the integer ambiguity resolution performance, the PPP-RTK network and user models need to be flexible enough to accommodate the occurrence of system-specific receiver biases. In this contribution we present such undifferenced, multi-system PPP-RTK full-rank models for both network and users. By an application of S-system theory, the multi-system estimable parameters are presented, thereby identifying how each of the three PPP-RTK components are affected by the presence of the system-specific biases. As a result different scenarios are described of how these biases can be taken into account. To have users benefit the most, we propose the construction of an ISB look-up table. It allows users to search the table for a network receiver of their own type and select the corresponding ISBs, thus effectively realizing their own ISB-corrected user model. By applying such corrections, the user model is strengthened and the number of integer-estimable user ambiguities is maximized.
KW - Differential ISB (DISB)
KW - Inter-system bias (ISB)
KW - ISB look-up table
KW - Multi-GNSS
KW - PPP-RTK
UR - http://www.scopus.com/inward/record.url?scp=84969795447&partnerID=8YFLogxK
U2 - 10.1007/s00190-016-0914-9
DO - 10.1007/s00190-016-0914-9
M3 - Article
AN - SCOPUS:84969795447
SN - 0949-7714
VL - 90
SP - 837
EP - 851
JO - Journal of Geodesy
JF - Journal of Geodesy
IS - 9
ER -