A synthetic aperture radar method for remote sensing of the surface of the Earth, in which radar signals are emitted by one or more transmitter(s) (Tx) moving above the surface of the Earth and radar echoes of the radar signals reflected on the surface of the Earth are received by one or more receiver(s) (Rx1, Rx2, Rx3) moving above the surface of the Earth, wherein all transmitter(s) (Tx) and receiver(s) (Rx1, Rx2, Rx3) are located on different platforms above the surface of the Earth and the movements of the platforms of the transmitter(s) (Tx) and the receiver(s) (Rx1, Rx2, Rx3) are independent of each other, wherein a respective transmitter (Tx) and a respective receiver (Rx1, Rx2, Rx3) as well as a signal processing platform above the surface of the Earth perform the following steps: a) the respective transmitter (Tx) generates signals in a base frequency band and performs a first frequency conversion of these signals into a first frequency band by means of oscillator signals of an oscillator of the respective transmitter (Tx), wherein the converted signals are emitted as the radar signals; b) the respective receiver (Rx1, Rx2, Rx3) receives the radar echoes of the radar signals of the respective transmitter (Tx) and performs a phase preserving modulation by means of the received radar echoes or by means of processed radar echoes (RE') and transmits the modulated signals obtained therefrom to the signal processing platform, wherein the processed radar echoes (RE') are obtained from the received radar echoes by means of a processing without frequency conversion or by means of a processing which comprises one or more second frequency conversions into a second frequency band and in which each second frequency conversion is reversed by an associated third frequency conversion into the first frequency band, wherein the second frequency conversion(s) and the third frequency conversion(s) are performed by means of oscillator signals of the same oscillator of the respective receiver (Rx1, Rx2, Rx3); c) the signal processing platform demodulates the received modulated signals and performs a fourth frequency conversion of the demodulated signals into the base frequency band by means of oscillator signals of the oscillator of the respective transmitter (Tx), thereby obtaining SAR raw data from which the signal processing platform generates and stores digital data. a) the respective transmitter (Tx) generates signals in a base frequency band and performs a first frequency conversion of these signals into a first frequency band by means of oscillator signals of an oscillator of the respective transmitter (Tx), wherein the converted signals are emitted as the radar signals; b) the respective receiver (Rx1, Rx2, Rx3) receives the radar echoes of the radar signals of the respective transmitter (Tx) and performs a phase preserving modulation by means of the received radar echoes or by means of processed radar echoes (RE') and transmits the modulated signals obtained therefrom to the signal processing platform, wherein the processed radar echoes (RE') are obtained from the received radar echoes by means of a processing without frequency conversion or by means of a processing which comprises one or more second frequency conversions into a second frequency band and in which each second frequency conversion is reversed by an associated third frequency conversion into the first frequency band, wherein the second frequency conversion(s) and the third frequency conversion(s) are performed by means of oscillator signals of the same oscillator of the respective receiver (Rx1, Rx2, Rx3); c) the signal processing platform demodulates the received modulated signals and performs a fourth frequency conversion of the demodulated signals into the base frequency band by means of oscillator signals of the oscillator of the respective transmitter (Tx), thereby obtaining SAR raw data from which the signal processing platform generates and stores digital data.