Distributed radar system and method of operation thereof

A control unit for use in distributed radar system having a plurality of antenna units arranged in a predetermined spaced apart arrangement in a selected region and configured to collectively transmit an output radiation signal and receive collected radiation signals, the output radiation signal having a known beam structure including a plurality of spatial features within a beam envelope, with distances between the plurality of antenna units that are larger than a wavelength of the output radiation signal transmitted or received by the radar system, the control unit comprising:

• a communication module configured for communicating with a plurality of antenna units for receiving input data indicative of collected radiation signal portions from said plurality of antenna units, said radiation signal portions being associated with reflected signal portions from one or more objects;
• at least one processor, said processor comprises a localization module adapted for processing said input data and determining location of one of more objects;
• said processing comprises for at least one axis:
• applying a first mono-pulse beam processing characterized by a first angular shift, and determining relative location of said one or more objects with respect to spatial features in a received beam by said plurality of antenna units, and applying a second mono-pulse beam processing characterized by a second angular shift different from the first angular shift for determining angular location of said one or more objects with respect to said arrangement of plurality of antenna units;
• wherein the first angular shift is determined in accordance with an angular width of the spatial features in the beam structure, wherein the second angular shift is determined based on an angular width of the beam envelope, being an integer multiple of an angular distance between the spatial features in the beam structure, and wherein the first angular shift is smaller with respect to the second angular shift.

A software product embedded in a non-transitory computer readable medium and comprising computer instructions that when executed by one or more computer processor cause the processors to:

• acquire data indicative of a predetermined spaced apparat spatial arrangement of a distributed antenna system comprising a plurality of antenna units in a selected region and of a known beam structure of an output radiation signal collectively transmitted by the plurality of antenna units, of the known beam structure including a plurality of spatial features within a beam envelope, wherein distances between the plurality of antenna units are larger than a wavelength of the output radiation signal transmitted or received by the distributed antenna system;
• receive input data collected from a plurality of antenna units and indicative of collected electromagnetic radiation signals associated with reflection of the transmitted output radiation signal from one or more objects;
• processing the input data for determining location of said one or more objects with respect to said arrangement of a plurality of antenna units, said processing comprises:
• applying a first mono-pulse beam processing characterized by a first angular shift, and determining a relative location of said one or more objects with respect to spatial features in a received beam, and
• applying a second mono-pulse beam processing characterized by a second angular shift different from the first angular shift for determining location of said one or more objects with respect to said arrangement of plurality of antenna units;
• wherein the first angular shift is determined in accordance with an angular width of the spatial features in the beam structure, wherein the second angular shift is determined based on an angular width of the beam envelope, being an integer multiple of an angular distance between the spatial features in the beam structure, and wherein the first angular shift is smaller with respect to the second angular shift.