  We present a spatially resolved study of the kinematical properties of known
supernova remnants (SNRs) in the nearest galaxies of the SIGNALS survey, namely
NGC 6822 (one object) and M33 (163 objects), based on data obtained with the
SITELLE Imaging Fourier Transform Spectrometer (iFTS) at the
Canada-France-Hawaii Telescope. The purpose of this paper is to provide a
better scheme of identification for extragalactic SNRs and, in particular, to
distinguish between HII regions and SNRs. For that we have used diagrams which
involve both the [SII]/H$\alpha$ ratio and the velocity dispersion ($\sigma$).
We also introduce a new parameter, $\xi = {[SII] \over H\alpha} \times \sigma$,
which enhances still the contrast between SNRs and the rest of the ionised gas.
More than 90\% of the SNRs in our entire sample show an integrated
[SII]/H$\alpha$ ratio larger than the canonical value (0.4). 86\% of the SNRs
present in our field show a significant velocity dispersion. The spectral
resolution of our observations allows us to observe the complex velocity
structure of some SNRs.
