  We present the detection limits of a new survey for resolved low surface
brightness satellite galaxies to the Milky Way, based on the Sloan Digital Sky
Survey (SDSS). Our survey exploits SDSS's major strengths (multi-color
photometry, depth, large-scale, and uniformity) by combining filter smoothing
with limits in both magnitude and color space to search for low surface
brightness galaxies and stellar counterparts to the Compact High Velocity
Clouds out to the Milky Way's virial radius (350 kpc). Our calculated detection
limits for a purely old stellar population vary with galaxy size and distance
between mu_{V,0} = 26.7 and 30.1 mag/sq ''. These limits will allow us to
detect systems whose surface brightnesses are .5-3.9 mag/sq '' fainter than
Sextans, the lowest surface brightness Local Group member known. Our survey not
only is sensitive to lower surface brightness stellar populations than possible
with previous Local Group surveys, but will also allow us to make an unbiased
and well defined assessment of the completeness of the observed Local Group
galaxy luminosity function, so that we may compare the results with the
predictions of various structure formation scenarios.
