Specifications
90 Z-Family Technical Reference Manual
Where Table 6.17 outlines the response structure.
LPS: Loop Tracking
$PASHS,LPS,d1,d2,d3
Set user-selectable third-order loop tracking parameters, where d1 is the 3rd order
ratio of the carrier loop, d2 is the carrier loop parameter, and d3 is the code loop
parameter (see $PASHR,LPS below for more information). Loop setting allows the
Table 6.17: ION Message Structure
Type
Size
(Bytes)
Contents
float 4
α0. Ionspheric parameter(seconds)
float 4
α1. Ionspheric parameter (sec. per semicircle)
float 4
α2. Ionspheric parameter (sec. per semicircle)
float 4
α3. Ionspheric parameter (sec. per semicircle)
float 4
β0. Ionspheric parameter (seconds)
float 4
β1. Ionspheric parameter (sec. per semicircle)
float 4
β2. Ionspheric parameter (sec. per semicircle)
float 4
β3. Ionspheric parameter (sec. per semicircle)
double 8 A1.First order terms of polynomial
double 8 A0. Constant terms of polynomial
unsigned long 4 tot. Reference time for UTC data
short 2 Wnt. UTC reference week number
short 2
∆tLS. GPS-UTC differences at reference time
short 2 WNLSF. week number when leap second became effective
short 2 DN. day number when leap second became effective
short 2
∆tLSF. Delta time between GPS and UTC after correction
short 2 WN. GPS week number
unsigned long 4 tow. Time of the week (in seconds)
short 2 bulwn. GPS week number when message was read
unsigned long 4 bultow. Time of the week when message was read
short 2 Word checksum
total = 76