Phase only synthesis in time modulated array

Radar applications and instantaneous control in time-domain arrays

“…Among them, the first technique of interest (Sparse TMA -STMA) [4] relies on the switching of the antennas to create a sparse array, at each time step, with a constant number of antennas switched on. In other words, is either 0 or 1, there is no phase, =0.…”

“…Figure 3: Synthesis with POSTMA coded on the instantaneous patterns are in (a) and the av (b). A zero has been synthesized in the 47 eamwidth, a good n some specific detailed in [4].…”

Time Modulated Array – A Database Approach

“…Many authors have already worked on the optimization of the latter time dimension. On the former, specially for radar, we can mention the use of sparse arrays (STMA [7]) and Phase Only Synthesis solution (POSTMA [8]). For all these cases, the number of degrees of freedom can be large (multiple amplitudes and/or phases for w mp , different durations ∆t p ), which gives better results, but longer optimization time.…”