Siemens-albis, Ag

Siemens-albis

Rolf Bachtiger

A radar system operating by the line-of-sight method requires an accurate measurement of the relative position of at least two objects. By sending out coded radar transmission pulses, control data are transmitted to a guided flying body in a radar beam, which sends back an echo signal to the receiver via a transponder. In order to measure the passive signal and the transponder echo signal in the radar beam as accurately as possible, common reception channels are provided for both echo signals containing, inter alia, arrangements to equalize the dynamic levels of the echo signals. The returned transponder echo signal corresponds with respect to coding and bandwidth to the transmission pulses originally generated in the transmitter and that are phase-coded but not provided with the control code.

Radar system for determining the position of two or more objects

A type of transmitter, that transmits an unexpanded continuous unmodulated signal following a predetermined number of transmission pulses, is disclosed for the regulation of a multichannel pulse compression system. At least two compression channels are available which are inserted between a microwave receiver stage and a demodulator. A respective monitoring signal is extracted from the output of each compression channel and these monitoring signals are compared in a control circuit in order to obtain a phase difference signal and an amplitude difference signal. A respective control signal is derived from each difference signal in order to regulate a phase shifter and an attenuation circuit, which are provided in at least one of the compression channels, in such a manner that the phase difference signal and the amplitude difference signal are compensated towards zero.

Circuit arrangement for the regulation of a multichannel pulse

A multi-channel amplifier apparatus for oscillation or pulse packets wherein there is provided an amplifier having an input connected by a number of input time-delay lines with a respective input channel, each of which is correlated to an oscillation or pulse packet. The output of the amplifier is connected by means of respective series circuits of an output time-delay line and an output switch connected thereafter with a respective output channel correlated to the corresponding oscillation packet.

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Oberwil-Lieli, Switzerland

Rolf Bachtiger