<p>The impact of position resolution on the sensitivity of short-baseline reactor neutrino experiments searching for light sterile neutrinos is investigated. Detailed simulations are conducted to evaluate two detector configurations: a segmented detector and an opaque liquid scintillator (OLS) detector, each positioned at two candidate research reactor sites, HANARO and Kijang. For both detector types, pseudo-data are generated under realistic assumptions regarding neutrino flux, detector response, and background levels. Oscillation analyses are performed to estimate detector sensitivity, incorporating both statistical and systematic uncertainties. The results indicate that the OLS detector, owing to its superior position resolution, achieves leading sensitivity across a wide range of oscillation parameters, even under conservative experimental conditions. These findings underscore the potential of OLS technology as a highly effective approach for future sterile neutrino searches.</p>