reflected scattered refracted by the object transmitted signal 104 back scattered by measured object 300 is received by receiving device 200 in the form of a received signal 204 the structure i e base frequency and pulse modulation of received signal 204 is exactly the same as that of transmitted signal 104 with the exception that the propagation time of the electromagnetic waves from transmitting antenna 101 of transmitting device 100 to measured object 300 and back to a receiving antenna 201 of receiving device 200 causes a time delay due to measured distance 301 it should be pointed out that the measured distance divided into different u201c distance cells u201d among other things represents the desired measuring signal which is to be obtained using the device for distance measurement the propagation time difference between the point in time transmitted signal 104 is emitted from the transmitting antenna and the point in time the corresponding received signal 204 is received in receiving antenna 201 is approximately equal to twice the measured distance represented by reference numeral 301 divided by the speed of light c in the following the operation of receiving device 200 is briefly and schematically described with reference to the schematic block diagram of fig1 receiving device 200 has a reception switching unit 202 which is designed similarly to transmission switching unit 102 of transmitting device 100 and is responsible for oscillator output signal 207 output by oscillator unit 205 being u201c chopped up u201d into individual pulses a mixer input signal.