Radar applications and instantaneous control in time-domain arrays

978-1-4799-3538-3International audienceClassical Time-Modulated Array has been modified to obtain low sidelobes for both the average pattern and the instantaneous patterns. Contrary to TMA, the optimization is done on the array dimension and not on the time dimension. Examples with good rejection over time are shown

Time-Modulated Array for Radar applications

International audienceThe application of Time-Modulated Array (TMA) to radar is described. Some techniques based on TMA are compared, in terms of capabilities and hardware requirements. It is shown that they permit to keep the main lobe constant which is required for radar. Low sidelobes can be synthesized as well as interference suppression

Schelkunoff Multi Diagrams Receive Arrays

International audienc

Optimization of Sparse Time-Modulated Array by Genetic Algorithm for Radar Applications

International audienceThis letter investigates sparse time-modulated arrays (STMAs). It shows that they provide an efficient solution to achieve specified radiation patterns in radar application with a reduced number of bits to code the weighting coefficients. Interference rejection is also demonstrated

Phase Only Synthesis For Time Modulated Array

International audiencePhase Only Synthesis Time Modulated Array (POSTMA) is a new technique to reduce side lobe level (SLL) in radar application using phase only synthesis. It consists in applying successive sets of weights to the array elements during the integration time in order to generate an “average” SLL. Additional zeros can also be placed in the radiation pattern to suppress interference. It is also possible to steer to any desired direction

Optimizing communication in TMA for radar

International audienceA Time Modulated Array (TMA) based technique is used to simultaneously do a radar function in the main lobe and a communication function in the side lobes. It uses an averaging to do the radar function, while the communication is done with the variation from an intermediary pattern to another. An optimization of the secondary function (communication) is carried out. The QAM communication is optimized for the case of STMA. © 2016 IEEE

Dual function Radar Communication Time-Modulated Array

International audienceThis paper introduces the use of Time-modulated array methods to realize a dual function array. It is able to do a radar function in the mainlobe, while realizing a communication in the side lobe

Time Modulated Array for dual function radar and communication

International audienceA Time Modulated Array based technique is used to simultaneously do a radar function in the main lobe and a communication function in the side lobes. It uses an averaging to do the radar function, while the communication is done with the variation from an intermediary pattern to another. A 12-antenna array is shown with a stable main lobe for radar application and a variation of the magnitude of the side lobes to perform an Amplitude Modulation at 55° from the main lobe