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 objects one 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 setups radar under test (RUT) is directly connected to the R&S®SMW200A (+ R&S®FSW) via cable conducted test
  RUT and R&S®SMW200A (+ R&S®FSW) are equipped with antennas and connected via air interface over-the-air (OTA) test
Radar RX power setting calculation of power received by RUT regarding two-way radar equation radar equation
  power received by RUT is set manually manual
Simulation setup
System latency calibration R&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 type arbitrary object types can run at the same time  
  echo is not generated off
  echo for objects with variable range and constant velocity > 0 m/s is generated moving
  echo for objects with constant range and no velocity is generated static
  echo for objects with constant range and constant velocity > 0 m/s is generated static + moving
Parameters common to all object types
Object name   define 15-digit name
Range    
Setting range use radar range ambiguity to reduce min. range: off 2.1 km to 10 000 km
  use radar range ambiguity to reduce min. range: on 0.0001 km to 10 000 km
Setting resolution   0.1 m
RCS power setting: radar equation  
Model   Swerling 0
Setting range   –60 dBsm to +100 dBsm
Setting resolution   0.1 dBsm
Parameters for moving objects
Simulation mode object moves back to start position with set velocity after reaching its end position round trip
Object velocity    
Setting range the 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 range the maximum Doppler shift of 190 kHz
must not be exceeded
0.001 ms to vmax
vmax = (190 kHz / 2f ) × c
Direction object flies toward RUT approaching
  object flies away from RUT departing
Simulation quantization (moving)
Update delay increment object velocity ≥ 75 m/s 500 ps
  object velocity < 75 m/s 50 ps
Update rate delay depending on object velocity max. 2 MHz
Update rate power depending on object velocity max. 10 kHz
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