Based on the simulation results, a prototype radar system was designed operating in the frequency-modulated continuous wave (FM-CW) mode to generate the two desired frequency modes. To reduce cost and development time, a modified version of a 500-2000 MHz FM-CW radar was used that was developed to map near-surface internal layers over the Greenland ice sheet as a means to estimate the accumulation rate.

In this approach, each memory board is identical electrically and receives its bus ID upon connection into the system. The memory modules can be placed in any location of the ring bus, however the location can be chosen to minimize data latency and data congestion. The architecture allows for multiple memory boards to be accessed simultaneously by different elements in the system.

In the new approach, each memory board is identical electrically and receives its bus ID upon connection into the system. The computer elements are configured in a similar fashion. The architecture allows for multiple memory boards to be accessed simultaneously by different computer elements. The architecture results in a scaleable, robust fault tolerant system.

We have designed and demonstrated an L-band high-efficiency phase-stable T/R module that has been augmented with a closed-loop calibration circuit to achieve the 1° phase and 0.1-dB amplitude stability.

A document discusses a method by which GMSK (Gaussian minimum shift keying) modulation and a pseudonoise (PN) ranging signal may be combined. The proposed combined GMSK communications and PN ranging is one potential approach to address emerging requirements for simultaneous high data rate communications from and tracking of vehicles in deep space or at the Moon.