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feat: Add IGS SSR Ionospheric Corrections Support (RTCM 4076/201) #734

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feat: Add IGS SSR Ionospheric Corrections Support (RTCM 4076/201) #734

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70e8c37
chore(rtcm): remove trailing spaces
Jul 31, 2025
a959508
feat: add coding/decoding of IGS IONO SSR (4076/201 RTCM message)
Jul 21, 2025
6939518
feat: add compute Legendre Function method
Jul 23, 2025
301957b
feat: add compute_stec_from_spherical_harmonics
Jul 24, 2025
d950c63
chore(rtksvr): remove trailing spaces
Jul 31, 2025
432d7c7
feat(rtkrcv): add iono model from RTCM SSR
Jul 28, 2025
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4 changes: 2 additions & 2 deletions app/consapp/rtkrcv/conf/rtk.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ pos1-snrmask_L2 =0,0,0,0,0,0,0,0,0
pos1-snrmask_L5 =0,0,0,0,0,0,0,0,0
pos1-dynamics =off # (0:off,1:on)
pos1-tidecorr =off # (0:off,1:on,2:otl)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc,7:qzs-lex,8:stec)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc,7:qzs-lex,8:stec,9:ssr)
pos1-tropopt =saas # (0:off,1:saas,2:sbas,3:est-ztd,4:est-ztdgrad,5:ztd)
pos1-sateph =brdc # (0:brdc,1:precise,2:brdc+sbas,3:brdc+ssrapc,4:brdc+ssrcom)
pos1-posopt1 =on # (0:off,1:on)
Expand Down Expand Up @@ -116,7 +116,7 @@ file-tempdir =
file-geexefile =
file-solstatfile =
file-tracefile =
#
#

inpstr1-type =tcpcli # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,7:ntripcli,8:ftp,9:http)
inpstr2-type =tcpcli # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,7:ntripcli,8:ftp,9:http)
Expand Down
4 changes: 2 additions & 2 deletions app/consapp/rtkrcv/conf/single.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ pos1-snrmask_L2 =0,0,0,0,0,0,0,0,0
pos1-snrmask_L5 =0,0,0,0,0,0,0,0,0
pos1-dynamics =off # (0:off,1:on)
pos1-tidecorr =off # (0:off,1:on,2:otl)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc,7:qzs-lex,8:stec)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc,7:qzs-lex,8:stec,9:ssr)
pos1-tropopt =saas # (0:off,1:saas,2:sbas,3:est-ztd,4:est-ztdgrad,5:ztd)
pos1-sateph =brdc # (0:brdc,1:precise,2:brdc+sbas,3:brdc+ssrapc,4:brdc+ssrcom)
pos1-posopt1 =on # (0:off,1:on)
Expand Down Expand Up @@ -116,7 +116,7 @@ file-tempdir =
file-geexefile =
file-solstatfile =
file-tracefile =
#
#

inpstr1-type =tcpcli # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,7:ntripcli,8:ftp,9:http)
inpstr2-type =off # (0:off,1:serial,2:file,3:tcpsvr,4:tcpcli,7:ntripcli,8:ftp,9:http)
Expand Down
113 changes: 113 additions & 0 deletions app/consapp/rtkrcv/conf/ssr_iono.conf
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Original file line number Diff line number Diff line change
@@ -0,0 +1,113 @@
# This is a sample configuration file to test SSR ionospheric corrections
inpstr1-format =rtcm3
inpstr1-type =ntripcli
inpstr1-path =igs_username:[email protected]:2101/ALAC00ESP0 # Contains OBS+EPH


outstr1-type =file
outstr1-path =
outstr1-format =4

pos1-posmode =single
# pos1-posmode =ppp-kine # Does not seem to converge with the current settings

pos1-sateph =brdc

inpstr2-type =ntripcli
inpstr2-format =rtcm3
# Stream with SSR corrections
# inpstr2-path =igs_username:[email protected]:2101/SSRA00BKG0
# Stream with ephemeris
inpstr2-path =igs_username:[email protected]:2101/BCEP00BKG0

# External Broadcast orbits and clocks to speed-up TTFF
inpstr3-format =rtcm3
inpstr3-type =ntripcli
# Stream with SSR ionospheric corrections
inpstr3-path =igs_username:[email protected]:2101/IONO00IGS1

pos1-ionoopt =ssr
pos1-tropopt =est-ztd

pos1-frequency =l1+l2+l5

pos1-soltype =forward
pos1-elmask =10
pos1-snrmask_r =off
pos1-snrmask_b =off
pos1-snrmask_L1 =0,0,0,0,0,0,0,0,0
pos1-snrmask_L2 =0,0,0,0,0,0,0,0,0
pos1-snrmask_L5 =0,0,0,0,0,0,0,0,0
pos1-dynamics =on
pos1-tidecorr =on

pos1-posopt1 =on
pos1-posopt2 =on
pos1-posopt3 =on
pos1-posopt4 =on
pos1-posopt5 =off
pos1-exclsats =
pos1-navsys =63
pos2-armode =off
pos2-gloarmode =off
pos2-arthres =3
pos2-arlockcnt =0
pos2-arelmask =20
pos2-arminfix =0
pos2-elmaskhold =0
pos2-aroutcnt =5
pos2-maxage =30
pos2-slipthres =0.05
pos2-rejionno =30
pos2-rejgdop =30
pos2-niter =1
pos2-baselen =0
pos2-basesig =0
out-solformat =xyz
out-outhead =off
out-outopt =off
out-timesys =gpst
out-timeform =hms
out-timendec =3
out-degform =deg
out-fieldsep =
out-height =geodetic
out-geoid =internal
out-solstatic =all
out-nmeaintv1 =1
out-nmeaintv2 =1
out-outstat =1
stats-eratio1 =300
stats-eratio2 =300
stats-errphase =0.003
stats-errphaseel =0.003
stats-errphasebl =0
stats-errdoppler =1
stats-stdbias =30
stats-stdiono =0.03
stats-stdtrop =0.3
stats-prnaccelh =10
stats-prnaccelv =10
stats-prnbias =0.0001
stats-prniono =0.001
stats-prntrop =0.0001
stats-clkstab =5e-12
ant1-postype =xyz
ant1-antdele =0
ant1-antdeln =0
ant1-antdelu =0
misc-timeinterp =off
misc-sbasatsel =0
misc-rnxopt1 =
misc-rnxopt2 =

logstr1-type =off
logstr1-path =
misc-svrcycle =10
misc-timeout =30000
misc-reconnect =10000
misc-nmeacycle =5000
misc-buffsize =32768
misc-navmsgsel =all
misc-proxyaddr =
misc-fswapmargin =30
8 changes: 7 additions & 1 deletion app/consapp/rtkrcv/gcc/makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ rtkrcv : sbas.o stream.o rcvraw.o rtcm.o preceph.o options.o pntpos.o ppp.o
rtkrcv : novatel.o ublox.o crescent.o skytraq.o javad.o nvs.o binex.o
rtkrcv : rt17.o ephemeris.o rinex.o ionex.o rtcm2.o rtcm3.o rtcm3e.o
rtkrcv : tides.o septentrio.o swiftnav.o unicore.o
rtkrcv : sofa.o
rtkrcv : sofa.o ssr_ion.o


rtkrcv.o : ../rtkrcv.c
Expand Down Expand Up @@ -93,6 +93,8 @@ unicore.o: $(SRC)/rcv/unicore.c
$(CC) -c $(CFLAGS) $(SRC)/rcv/unicore.c
sofa.o : $(SRC)/sofa.c
$(CC) -c $(CFLAGS) $(SRC)/sofa.c
ssr_ion.o : $(SRC)/ssr_ion.c
$(CC) -c $(CFLAGS) $(SRC)/ssr_ion.c

rtkrcv.o : $(SRC)/rtklib.h ../vt.h
vt.o : ../vt.h
Expand Down Expand Up @@ -143,5 +145,9 @@ test2:
test3:
./rtkrcv -o ../rtk_pb.conf

test_ion_ssr:
./rtkrcv -t 4 -nc -o ../conf/ssr_iono.conf


clean:
rm -f rtkrcv rtkrcv.exe rtkrcv.nav *.o *.out *.trace
2 changes: 1 addition & 1 deletion data/config/demo5_m8n_1hz.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ pos1-snrmask_b =off # (0:off,1:on)
pos1-snrmask_L1 =38,38,38,38,38,38,38,38,38
pos1-dynamics =on # (0:off,1:on)
pos1-tidecorr =0 # (1:solid+2:otl+4:spole)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc,7:qzs-lex,8:stec)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc,7:qzs-lex,8:stec,9:ssr)
pos1-tropopt =saas # (0:off,1:saas,2:sbas,3:est-ztd,4:est-ztdgrad,5:ztd)
pos1-sateph =brdc # (0:brdc,1:precise,2:brdc+sbas,3:brdc+ssrapc,4:brdc+ssrcom)
pos1-exclsats = # (prn ...)
Expand Down
2 changes: 1 addition & 1 deletion data/config/demo5_m8t_5hz.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ pos1-snrmask_b =off # (0:off,1:on)
pos1-snrmask_L1 =38,38,38,38,38,38,38,38,38
pos1-dynamics =on # (0:off,1:on)
pos1-tidecorr =0 # (1:solid+2:otl+4:spole)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc,9:ssr)
pos1-tropopt =saas # (0:off,1:saas,2:sbas,3:est-ztd,4:est-ztdgrad)
pos1-sateph =brdc # (0:brdc,1:precise,2:brdc+sbas,3:brdc+ssrapc,4:brdc+ssrcom)
pos1-exclsats = # (prn ...)
Expand Down
2 changes: 1 addition & 1 deletion data/config/f9p_ppk.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ pos1-snrmask_L2 =35,35,35,35,35,35,35,35,35
pos1-snrmask_L5 =35,35,35,35,35,35,35,35,35
pos1-dynamics =on # (0:off,1:on)
pos1-tidecorr =off # (0:off,1:on,2:otl)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc,9:ssr)
pos1-tropopt =saas # (0:off,1:saas,2:sbas,3:est-ztd,4:est-ztdgrad)
pos1-sateph =brdc # (0:brdc,1:precise,2:brdc+sbas,3:brdc+ssrapc,4:brdc+ssrcom)
pos1-posopt1 =off # (0:off,1:on)
Expand Down
2 changes: 1 addition & 1 deletion data/config/rtknavi_example.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ pos1-snrmask_L2 =0,0,0,0,0,0,0,0,0
pos1-snrmask_L5 =0,0,0,0,0,0,0,0,0
pos1-dynamics =on # (0:off,1:on)
pos1-tidecorr =0 # (1:solid+2:otl+4:spole)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc)
pos1-ionoopt =brdc # (0:off,1:brdc,2:sbas,3:dual-freq,4:est-stec,5:ionex-tec,6:qzs-brdc,9:ssr)
pos1-tropopt =saas # (0:off,1:saas,2:sbas,3:est-ztd,4:est-ztdgrad)
pos1-sateph =brdc # (0:brdc,1:precise,2:brdc+sbas,3:brdc+ssrapc,4:brdc+ssrcom)
pos1-posopt1 =off # (0:off,1:on)
Expand Down
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