The distortion of images due to atmospheric turbulence is one of the major problems in astronomical imaging.
To compensate for turbulence induced aberrations in real-time, it is vital to have an accurate model of turbulence
strength, C<sup>2</sup><sub>N</sub>(<i>h</i>), and the average wind velocity, <i>V(h)</i>, above a given site. To that end, a bread-board based
SCIntillation Detection and Ranging (SCIDAR) system was developed for the Mount John University Observatory
(MJUO), located in New Zealand. The system, constructed from commercially available off-the-shelf
components, provides the flexibility to capture simultaneous pupil-plane and generalised SCIDAR. This provides
a useful tool for the measurement of optical turbulence at sites where the near-ground turbulence is exceptionally
strong and masks higher altitude layers. Measurements taken at MJUO, using the purpose-built instrument over
the last few years, consistently indicate the presence of very strong near-ground turbulence and at least two high
altitude turbulence layers (approximately 6 km and 11km above the site), with an additional layer at 1-3 km
when strong ground winds are present. The C<sup>2</sup><sub>N</sub>(<i>h</i>) trends from several months in 2005 and 2007 and the <i>V(h)</i> trends from two months in 2007 are presented. The coherence length,<i> r<sub>0</sub></i>, for the full profile was consistently 6-7 cm regardless of season or weather conditions in the months used in this trending. The Greenwood frequency,
<i>f<sub>G</sub></i> , ranged between 12 and 30 Hz for May and June 2007.