Rohde & Schwarz SMBVB-K362, Руководство пользователя

Страница: 19 / 28

Test configuration
R&S
®
SMBVB-K362, R&S
®
SMW-K362
19 User Manual 1178.9126.02 ─ 04
Test Case 2
Location accuracy (static receiver)
Specifies the test and measurement durations, and test limit values for static receiver.
●
Planimetric error : error threshold for the position estimation
●
Linear error confidence interval : error threshold for the position estimation as a
percentage value
The map displays the simulated geographical location as configured in Vehicle simula-
tion setting .
Test Case 3
Location accuracy (moving receiver)
●
Movement model :
The predefined movement file
eCallT3_T4.txt
for eCall is provided in the instal-
lation package. It specifies starting position of the DUT in Munich, Germany, ellipti-
cal trajectory with changing velocity.
A user-defined movement model can also be selected.
●
Error thresholds define the test limit values for a moving receiver, see also "Test
Case 2" on page 19.
●
Blockage model simulates a vehicle passing through two tunnels one after
another.
To use the blockage model, enable the "Blockage" and specify the time duration,
when the satellite is invisible ("t
blocked
") and visible ("t
visible
").
●
Environment model simulates a partial blocking of the GNSS signal in a low eleva-
tion angle, e.g., due to a building.
To use the environment model, enable the "Environment" checkbox. Then the sat-
ellite signal is visible, but partly blocked as specified via the antenna pattern file
eCallUrbanCanyon.ant_pat
for partial blocking, e.g., between two buildings.
This predefined file for
eCall
is provided in the installation package. It specifies
the following antenna pattern:
Test case setting