IS-GPS-800A - US Coast Guard Navigation Center

Table 3.5-1. Subframe 2 Parameters (2 of 3)ParameterNo. ofBits**ScaleFactor(LSB)EffectiveRange***Units 0-n **** i 0-n*****i 0-n –DOTC is-nC ic-nC rs-nC rc-nC us-nC uc-nReference right ascension angleRate of right ascension differenceInclination angle at reference timeRate of inclination angleAmplitude of the sine harmonic correctionterm to the angle of inclinationAmplitude of the cosine harmoniccorrection term to the angle of inclinationAmplitude of the sine correction term tothe orbit radiusAmplitude of the cosine correction term tothe orbit radiusAmplitude of the sine harmonic correctionterm to the argument of latitudeAmplitude of the cosine harmoniccorrection term to the argument of latitude33*17*33*15*16*16*24*24*21*21*2 -32semi-circles2 -44semi-circles/sec2 -32semi-circles2 -44semi-circles/sec2 -30radians2 -30radians2 -8meters2 -8meters2 -30radians2 -30 radians* Parameters so indicated are in two’s complement notation;** See Figure 3.5-1 for complete bit allocation in Subframe 2;*** Unless otherwise indicated in this column, effective range is the maximum range attainable withindicated bit allocation and scale factor.**** 0-n is the right ascension angle at the weekly epoch propagated to the reference time at the rate ofright ascension { REF Table 3.5-1}.***** Relative to REF = -2.6 x 10 -9 semi-circles/second.40 IS-GPS-800A8 June 2010