User Manual

Table Of Contents
SARA-R4 series-AT commands manual
UBX-17003787 - R16
23Positioning
Page 271 of 401
u-blox concurrent GNSS receivers can acquire and track satellites from more than one GNSS system at
the same time. The <GNSS_systems> parameter configures the GNSS receiver into the required mode of
operation. It is possible to combine different GNSS systems depending on the receivers capability to receive
several carrier frequencies. See the corresponding GNSS receiver data sheet for the supported GNSS systems.
If the Assisted GNSS unsolicited indication is enabled, the +UUGIND URC will provide the current activated
combinations of systems.
23.3.1.2Syntax
Type Syntax Response Example
Set AT+UGPS=<mode>[,<aid_mode>[,
<GNSS_systems>]]
OK AT+UGPS=1,0,1
OK
Read AT+UGPS? +UGPS: <mode>[,<aid_mode>[,
<GNSS_systems>]]
OK
+UGPS: 1,0,1
OK
Test AT+UGPS=? +UGPS: (list of supported <mode>s),
(list of supported <aid_mode>),(list
of supported <GNSS_systems>)
OK
+UGPS: (0-1),(0-15),(1-127)
OK
23.3.1.3Defined values
Parameter Type Description
<mode> Number
0 (default value): GNSS receiver powered off
1: GNSS receiver powered on
<aid_mode> Number Supported aiding modes; the parameter is mandatory if <mode>=1; all these allowed
values can be combined together:
0 (default value): no aiding
1: automatic local aiding
2: AssistNow Offline
4: AssistNow Online
8: AssistNow Autonomous
<GNSS_systems> Number Bitmask for combining the supported GNSS types; the parameter is optional and the
allowed values can be combined together. The default value is 3 (GPS+SBAS):
1: GPS
2: SBAS
4: Galileo
8: BeiDou
16: IMES
32: QZSS
64: GLONASS
23.3.1.4Notes
If <GNSS_systems> type is not supported by the GNSS receiver, the set command turns on the GNSS
receiver with built-in supported type. The current <GNSS_systems> can be queried by means of the read
command or the +UUGIND URC.
An error result code is provided in the following cases:
o <mode>, <aid_mode> or <GNSS_systems> values are out of range
o <mode> is set to 1 without <aid_mode> value
o Attempt to power off the GNSS when it is already off
o The value of <aid_mode> to be set is equal to the current GNSS aiding mode and the value of
<GNSS_systems> to be set is equal to the last requested <GNSS_systems>