R&S®SMW-K78 Radar Echo Generation

Key Facts

  • Real time capability for echo generation
  • Frequency coverage up to 40 GHz with one single generator and analyzer
  • Excellent RF performance of R&S®SMW200A signal generator and R&S®FSW signal and spectrum analyzer

Brief Description

The R&S®SMW-K78 radar echo generation option, in conjunction with the R&S®SMW200A vector signal generator and the R&S®FSW spectrum and signal analyzer, makes it possible to artificially generate radar signal echoes.

Specifications

General parameters
Number of available radar objects up to 24 objects
Bandwidth up to 160 MHz

Key Facts

  • Real time capability for echo generation
  • Frequency coverage up to 40 GHz with one single generator and analyzer
  • Excellent RF performance of R&S®SMW200A signal generator and R&S®FSW signal and spectrum analyzer
  • Baseband flexibility of R&S®SMW200A (e.g. add interferers and noise)
  • No external PC necessary
  • Intuitive and easy to use graphical user interface

Brief Description

The R&S®SMW-K78 radar echo generation option, in conjunction with the R&S®SMW200A vector signal generator and the R&S®FSW spectrum and signal analyzer, makes it possible to artificially generate radar signal echoes. These tests can be performed via a wired connection (conducted test) or via the air interface (over the air test), eliminating much of the need for time-consuming and costly field tests.

Specifications

General parameters
Number of available radar objectsone R&S®SMW-K78 option
one or two R&S®SMW-B14 installed
path A: up to 6
 one R&S®SMW-K78 option
four R&S®SMW-B14 installed
path A: up to 12
 two R&S®SMW-K78 options
two R&S®SMW-B14 installed
path A: up to 6
path B: up to 6
 two R&S®SMW-K78 options
four R&S®SMW-B14 installed
path A: up to 12
path B: up to 12
Bandwidth up to 160 MHz
Test setupsradar under test (RUT) is directly connected to the R&S®SMW200A (+ R&S®FSW) via cableconducted test
 RUT and R&S®SMW200A (+ R&S®FSW) are equipped with antennas and connected via air interfaceover-the-air (OTA) test
Radar RX power settingcalculation of power received by RUT regarding two-way radar equationradar equation
 power received by RUT is set manuallymanual
Simulation setup
System latency calibrationR&S®SMW-K78 measures the internal system (R&S®FSW + R&S®SMW200A) latency automatically
(only available in transmit signal mode: external baseband via R&S®FSW + R&S®SMW-B10)
automatic
 user measures internal latency with external equipment (e.g. scope)manual
Object configuration
Object typearbitrary object types can run at the same time 
 echo is not generatedoff
 echo for objects with variable range and constant velocity > 0 m/s is generatedmoving
 echo for objects with constant range and no velocity is generatedstatic
 echo for objects with constant range and constant velocity > 0 m/s is generatedstatic + moving
Parameters common to all object types
Object name define 15-digit name
Range  
Setting rangeuse radar range ambiguity to reduce min. range: off2.1 km to 10 000 km
 use radar range ambiguity to reduce min. range: on0.0001 km to 10 000 km
Setting resolution 0.1 m
RCSpower setting: radar equation 
Model Swerling 0
Setting range –60 dBsm to +100 dBsm
Setting resolution 0.1 dBsm
Parameters for moving objects
Simulation modeobject moves back to start position with set velocity after reaching its end positionround trip
Object velocity  
Setting rangethe maximum Doppler shift of 190 kHz
must not be exceeded
0.001 ms to vmax
vmax = 750 m/s or
(190 kHz / 2f ) × c, whichever is lower
Setting resolution 0.001 m/s
Parameters for static + moving objects
Object velocity  
Setting rangethe maximum Doppler shift of 190 kHz
must not be exceeded
0.001 ms to vmax
vmax = (190 kHz / 2f ) × c
Directionobject flies toward RUTapproaching
 object flies away from RUTdeparting
Simulation quantization (moving)
Update delay incrementobject velocity ≥ 75 m/s500 ps
 object velocity < 75 m/s50 ps
Update rate delaydepending on object velocitymax. 2 MHz
Update rate powerdepending on object velocitymax. 10 kHz
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