data: use 24h XTRA file for better GNSS performance

Quectel in the documentation for other Qualcomm-based modem explains
in details DPO (Dynamic Power Optimization), that is enabled on EG25-G
currently. One of requirements for DPO is, that XTRA almanac must be
less that 3.5 days old. [1]

Additionally SIMCOM says, that information predicted by XTRA is very
accurate within 24 hours, but its effectiveness decreases over time. [2]

Xtra3 files are available for 1 day (xtra3grc_24h.bin), 3
days (xtra3grc_72h.bin) and 7 days (xtra3grc.bin). Currently 7 days
variant is used.

Based on recommendations from Quectel and SIMCOM to slightly improve
GNSS performance switch default configuration to 24h XTRA variant.

1. https://sixfab.com/wp-content/uploads/2018/09/Quectel_UC20_GNSS_AT_Commands_Manual_V1.1.pdf
2. https://cdn.geekfactory.mx/sim7000g/SIM7000%20Series_GNSS_Application%20Note_V1.03.pdf
This commit is contained in:
Andrey Skvortsov
2025-09-17 23:35:22 +03:00
parent b02c671839
commit 2d8a19bfd7
4 changed files with 4 additions and 4 deletions

View File

@@ -125,4 +125,4 @@ reset = [ { cmd = "CFUN", value = "1,1" } ]
[gnss]
enabled = true
url = "https://xtrapath4.izatcloud.net"
file = "xtra3grc.bin"
file = "xtra3grc_24h.bin"

View File

@@ -125,4 +125,4 @@ reset = [ { cmd = "CFUN", value = "1,1" } ]
[gnss]
enabled = true
url = "https://xtrapath4.izatcloud.net"
file = "xtra3grc.bin"
file = "xtra3grc_24h.bin"

View File

@@ -124,4 +124,4 @@ reset = [ { cmd = "CFUN", value = "1,1" } ]
[gnss]
enabled = true
url = "https://xtrapath4.izatcloud.net"
file = "xtra3grc.bin"
file = "xtra3grc_24h.bin"

View File

@@ -124,4 +124,4 @@ reset = [ { cmd = "CFUN", value = "1,1" } ]
[gnss]
enabled = true
url = "https://xtrapath4.izatcloud.net"
file = "xtra3grc.bin"
file = "xtra3grc_24h.bin"