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12/07-W00-Bb 

 

Instruction Sheet 737 630 

MTI Simulator (737 630) 

 
 
 

Target Control

 (737 630 1) 

1  Toggle switch for selection of frequency range 

2  Frequency fine adjust 

3  Adjust for reflector displacement 

4  Output to connect the Doppler target (4 mm sockets) 

 

 

 

 

 

Doppler Target

 (737 630 2) 

5 Metal 

reflector 

6  Input Socket (with high power ohmic load) 

 

Security Hints 

The MTI Simulator is exposed to the field of a microwave sour-
ce. Experimentation therefore is due to the common known 
regulations concerning the handling with RF emitting sources. 

- Avoid directly viewing into the radiating waveguide. 

- Apply to the additional security hints of 737 01 Gunn Oscillator 

The operation of the MTI Simulator without supervision by an 
experienced tutor, or outside a training facility is not allowed. 

 

Warnings 

The Doppler Target is a modified loudspeaker. The 
loudspeaker’s cone is unprotected and gives free acces for 
didactic reasons. As cone and reflector are mechanical 
sensistive parts it is imperative: 

Not to touch! 

Behind the 4 mm 

sockets, on the rear side of the Doppler Target, there is a high 
power ohmic load, which heats up during operation with 
maximum amplitude (adjustable at target control). Attention 
don’t touch with your fingers! 

 

1 Description 

The MTI Simulator is designed to perform stationary experi-
ments in Doppler radar systems. The moving target is the oscil-
lating reflector plate upon the membrane of the loudspeaker. 
The Target Control supplies the electrical power for the Doppler 
Target. The simulation of Doppler targets with different speed is 
simulated by frequency and amplitude adjustments. The output 
signals from the Doppler Converter (737 615) are measured 
with Sensor-CASSY. They are evaluated with the CASSY Lab 
software. The speeds selectable at the Target Control are simi-
lar to those of the trolley on the track. The operation of the MTI 
Simulator needs additional material and a PC with software. 

 

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