Background, Motivation and Objective Coded excitation (CE) imaging enables transmission of large time-bandwidth waveforms [1].Since such waveforms are typically pulse-compressed by matched filtering, much research investigates schemes for reducing auto- and cross-correlation sidelobes to decrease clutter with distributed targets.The goal of this presentation is to harmonize CE transmission with the image quality of Synthetic Transmit Aperture (STA) imaging at high frame rates.We propose a two-step process that estimates medium impulse responses (IR), then retrospectively images using the IR set.In this way, the probing code sequence is used optimally yet is decoupled from the imaging step, circumventing the sidelobe problem.