الفهرس 
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Abstract
Graphical detection method can be considered as a primary stage
for cycle slips detection, while the statistical tests (Z-score or quartiles)
for cycle slips detection are considered to be morereliable than graphical
detection thus they identify the occurrence of the cycle slips at specific
epochs. In case of using dual frequency receivers data series any time
difference for L
gf
or IR can be used as test quantities for the cycleslip
detection by any statistical tests, while in case of using single frequency
receivers data series, 1
st
time difference of L
1
and C/A combination can
be used as test quantity for the cycle slip detection by any statistical tests.
There are many factors affect the sensitivity of the detection
procedure which are: the time span of the observations, type of the used
receiver (single or dual), the type of used antenna, the type of test
quantity, type of the used statistical test, and the existence of large signal
noise, ionospheric effect, multipath, and other biases. There are many
factors affect the uncertainty of the repair procedure which are: the time
span of the observations, and the existence of large signal noise,
ionospheric effect, multipath, and other biases. Any trial can be used for the cycle slips repair by geometric method and average method except
for the 1
st
and 2
nd
time differences for the average for all data as they give
very low accuracy of the cycle slip fixation.