  We consider a recent scheme of gravitational wave detection using atomic
interferometers as inertial sensors, and reinvestigate its configuration using
the concept of sensitivity functions. We show that such configuration can
suppress noise without influencing the gravitational wave signal. But the
suppression is insufficient for the direct observation of gravitational wave
signals, so we analyse the behaviour of the different noises influencing the
detection scheme. As a novel method, we study the relations between the
measurement sensitivity and the distance between two interferometers, and find
that the results derived from vibration noise and laser frequency noise are in
stark contrast to that derived from the shot noise, which is significant for
the configuration design of gravitational wave detectors using atomic
interferometers.
