  This is the second paper in a series where we propose a method of indirectly
measuring large scale structure using information from small scale
perturbations. The idea is to build a quadratic estimator from small scale
modes that provides a map of structure on large scales. We demonstrated in the
first paper that the quadratic estimator works well on a dark-matter-only
N-body simulation at a snapshot of $z=0$. Here we generalize the theory to the
case of a light cone halo catalog with a non-cubic region taken into
consideration. We successfully apply the generalized version of the quadratic
estimator to the light cone halo catalog based on an N-body simulation of
volume $\sim15.03\,(h^{-1}\,\rm Gpc)^3$. The most distant point in the light
cone is at a redshift of $1.42$, indicating the applicability of our method to
next generation of galaxy surveys.
