  We analyze theoretically the sensitivity of accelerometry and rotation
sensing with a point source interferometer employing large momentum transfer
(LMT) and present a design of an inertial measurement unit (IMU) that can
measure rotation around and acceleration along each of the three axes. In this
design, the launching technique is used to realize the LMT process without the
need to physically change directions of the Raman pulses, thus significantly
simplifying the apparatus. We also describe an explicit scheme for such an IMU.
