- Timestamp:
- Sep 4, 2018, 9:08:47 AM (6 years ago)
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trunk/BNC/src/bnchelp.html
r8466 r8468 2074 2074 <p> 2075 2075 <ul> 2076 <li>The RINEX Version 2 format ignores signal generation attributes. Therefore, when converting <b>RINEX Version 3 to Version 2</b> Observation files, BNC is forced to somehow map signals with attributes to signals without attributes although this cannot be done in one-to-one correspondence. Hence we introduce a 'Version 2 Signal Priority' list of attributes (characters, forming a string) for mapping Version 3 to Version 2, see details in section 'RINEX Observations/Version 2'. Signal priorities can be specified as equal for all systems, as system specific or as system and frequency specific. For example:</li> 2077 <ul> 2078 <li>'CWPX_?' (General signal priorities valid for all GNSS)</li> 2079 <li>'C:IQX I:ABCX' (System specific signal priorities for BDS and IRNSS)</li> 2080 <li>'G:12&PWCSLXYN G:5&IQX R:12&PC R:3&IQX' (System and frequency specific signal priorities)</li> 2081 </ul> 2082 </p> 2083 <p> 2084 The default 'Signal priority' list is defined as follows: 2085 <ul> 2086 <li>'G:12&PWCSLXYN_ G:5&IQX_ R:12&PC_ R:3&IQX_ E:16&BCX_ E:578&IQX_ J:1&SLXCZ_ J:26&SLX_ J:5&IQX_ C:IQX_ I:ABCX_ S:1&C_ S:5&IQX_'</li> 2087 </ul> 2088 </p> 2089 <p> 2076 <li>The RINEX Version 2 format ignores signal generation attributes. Therefore, when converting <b>RINEX Version 3 to Version 2</b> Observation files, BNC is forced to somehow map signals with attributes to signals without attributes although this cannot be done in one-to-one correspondence. Hence we introduce a 'Version 2 Signal Priority' list of attributes (characters, forming a string) for mapping Version 3 to Version 2, see details in section 'RINEX Observations/Version 2'. 2090 2077 <li>When converting <b>RINEX Version 2 to Version 3</b> Observation files, the tracking mode or channel information in the (last character out of the 3-character) observation code is left blank if unknown. This is a compromise, knowing that it is not in accordance with the RINEX Version 3 documentation.</li> 2091 2078 </ul>
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