  While quantum illumination (QI) can offer a quantum-enhancement in target
detection, its potential for performing target ranging remains unclear. With
its capabilities hinging on a joint-measurement between a returning signal and
its retained idler, an unknown return time makes a QI-based protocol difficult
to realise. This paper outlines a potential QI-based approach to quantum target
ranging based on recent developments in multiple quantum hypothesis testing and
quantum-enhanced channel position finding (CPF). Applying CPF to time bins, one
finds an upper-bound on the error probability for quantum target ranging.
However, using energetic considerations, we show that for such a scheme a
quantum advantage may not physically be realised.
