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An X-band optically-steered phased array radar is developed to demonstrate high resolution multi-target detection. The beam forming is implemented based on wavelength-swept true time delay (TTD) technique. The beam forming system has a wide direction tuning range of ±54°, low magnitude ripple of ±0.5 dB and small delay error of 0.13 ps/nm. To further verify performance of the proposed optically-steered...