Changeset 11148 in ntrip for trunk/BNC/src

Timestamp:

Oct 31, 2026, 10:27:54 PM (6 days ago)

Author:

stuerze

Message:

minor changes regarding GLONASS health and SSR QC

Location:

trunk/BNC/src

Files:

• bnchelp.html (modified) (1 diff)
• ephemeris.cpp (modified) (2 diffs)
• ssrQc.cpp (modified) (1 diff)

trunk/BNC/src/bnchelp.html

@@ -3889 +3889 @@
       the health word contains one flag per signal (L1, L2, L5; bits 52-54 of Message Type 10). Such a data set is
       considered unhealthy only if the L1 or L2 flag is set; an L5-only flag, as it is common for satellites with a
-      not yet fully operational L5 signal, is ignored.</li>
+      not yet fully operational L5 signal, is ignored. A GLONASS data set is considered unhealthy if the most
+      significant bit of Bn or, for GLONASS-M/K, the flag ln is set, or if the almanac flag Cn (where available)
+      indicates a malfunction (GLONASS ICD, section 5.3).</li>
     <li>'WRONG': The data set failed a plausibility check. It is considered wrong if the satellite's radial distance
       at TOC is not between 20,000 km and 60,000 km, or if satellite position or clock at its TOC differ by more than

trunk/BNC/src/ephemeris.cpp

@@ -1184 +1184 @@
 // Constructor
 //////////////////////////////////////////////////////////////////////////////
-t_ephGlo::t_ephGlo(double rnxVersion, const QStringList &lines, const QString typeStr) {
+t_ephGlo::t_ephGlo(double rnxVersion, const QStringList &lines, const QString typeStr)
+  : t_ephGlo() { // all members initialized, e.g. _M_l5 (not in RINEX)
 
   setType(typeStr);
@@ -1840 +1841 @@
 unsigned int t_ephGlo::isUnhealthy() const {
 
+  // GLONASS-M/K: health flag ln of strings 3 and 5, evaluated like the MSB
+  // of Bn (GLONASS ICD 5.1, section 5.3: "Bn (ln)")
+  if (_M_M && (_M_l3 || _M_l5)) {
+    return 1;
+  }
   if (_almanac_health_availablility_indicator) {
     if ((_health == 0 && _almanac_health == 0)

trunk/BNC/src/ssrQc.cpp

@@ -1582 +1582 @@
           maxAlongCrossPrn = prn;
         }
-        if (!stat.missingRefSig.isEmpty()) {
+        // only satellites with corrections (providers list satellites
+        // without corrections with zero biases, e.g. GMV E14/E18)
+        if (!stat.missingRefSig.isEmpty() && (stat.numClk || stat.numOrb)) {
           QStringList sigs = stat.missingRefSig.values();
           sigs.sort();