FIELD: radio engineering, communication.
SUBSTANCE: desired operating frequency band with a width B is divided into N non-overlapping sub-bands in the frequency Bk, k=1…N, so that 
. The carrier frequency sub-bands are mutually coherent (derived from a common reference oscillator) ƒk=ƒ1Δƒ (k-1), where ƒ1 - lower the carrier frequency; 
- the interval between carrier frequencies not exceeding the maximum signal band width Bk. In order to increase the working distance is performed in each sub-band phase modulation (keying) signal (linear or nonlinear frequency modulation, phase-shift keying), and when receiving the signal is compressed. The resultant signal is obtained by summing the despread signals in accordance with their carrier phase. To reduce the sidelobes in the resulting phase modulation signal (manipulation) can be performed on an individual law for each carrier frequency.
EFFECT: increase of the range resolution.
3 dwg
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