1. THE EXCHANGE OF BIAS FILES gageyyyyddd.bias | | | | | | | +-- bias: fractional part of carrier-phase ambiguities (B1 BW) | | | | | +------ ddd: day of the year of first record | | | +--------- yyyy: year | +------------- gage: research group of Astronomy and GEomatics at Universitat Politecnica de Catalunya 2. BIAS FORMAT DEFINITION AND EXAMPLE +------------------------------------------------------------------+ | | | BIAS DATA FILE - DATA RECORD DESCRIPTION | | | +---------------------------------------------+--------+-----------+ | DESCRIPTION | COLUMN | FORMAT | +---------------------------------------------+--------+-----------+ | - Epoch : | | | | - year (4 digits) | 1 | I4 | | - day of the year | 2 | I3 | | - second of day (GPS time) | 3 | I5 | | | | | | - Satellite number with system identifier | 4 | A1,I2.2 | | | | | | - cycles of B1* | 5 | F8.4 | | | | | | - cycles of BW* | 6 | F8.4 | | | | | | - DCB (meters of P2 - P1) | 7 | F8.4 | | | | | | - Sigma of DCB (meters of P2 - P1) | 8 | ES8.2 | | | | | +---------------------------------------------+--------+-----------+ * These records could get a value equal to 999.0000, what means the message is not valid. +----------------------------------------------------------+ | | | BIAS DATA FILE - EXAMPLE | | | +----------------------------------------------------------+ ----|---1|0---|---2|0---|---3|0---|---4|0---|---5|0---|---6| 2014 1 0 G14 0.3001 0.1690 -2.5350 3.00e-02 2014 1 0 G16 999.0000 999.0000 -2.6999 3.00e-02 2014 1 0 G25 -0.1159 0.0225 0.2882 3.00e-02 2014 1 300 G17 0.0083 0.4107 -2.8156 3.00e-02 2014 1 300 G19 0.6967 0.3395 -3.6611 3.00e-02 2014 1 300 G26 -0.1017 0.4440 -1.9357 3.00e-02