Abstract: A device and method for tracking a signal of interest from a signal transmitting device, in the presence of cross-polarization or adjacent emitter interference, is provided. An antenna, which may have a beamwidth greater than an angular spacing of geo-stationary transmitting device, is used to receive the signal of interest from a transmitting device. The received signal of interest is analyzed to determine a frequency characteristic of the received signal of interest, and a filter of a plurality of filters is selected based on the determined bandwidth of the signal of interest. The selected filter is applied to the received signal of interest.

Abstract: An apparatus and method is presented for calibrating an output(s) of an inertial measurement unit (IMU) using rotational rate as a reference. Calibrating the IMU output(s) is performed by comparing the IMU output(s) to expected output(s), where the expected output(s) are determined based on the known rate of rotation of the IMU and the centripetal force acting on the IMU due to known rate of rotation. By analyzing the differences between the expected IMU output(s) and the IMU output(s), it is possible to determine a correction factor that, when applied to the IMU output(s), calibrates the IMU output(s) by correcting for measurement errors.

Abstract: A radio frequency (RF) device includes an RF transmission line structure having opposing boundary walls with a non-rectilinear form factor, and a feed structure configured to introduce RF energy into an area between the opposing boundary walls to illuminate the RF transmission line structure with the RF energy across the non-rectilinear form factor. The feed structure includes a plurality of traveling-waveguide-fed leaky line-segment structures, each configured to launch the RF energy into the area with a propagation direction having an oblique angle relative to an axis of the line-segment structure.