Date of Award
Doctor of Philosophy (PhD)
Electrical and Computer Engineering
Laurie L. Joiner
Mervin C. Budge
John L. Stensby
Sensor networks., Radio wave propagation., Nuclear explosions.
We seek to retain a ballistic missile radar’s ability to perform target identification after a high-altitude nuclear detonation. The explosion establishes a random propagation channel for the radar characterized by two parameters: Correlation Bandwidth and Correlation Time. Typical target identification waveforms experience Frequency-Selective conditions as the waveform exceeds the time-variant channel’s Correlation Bandwidth. We propose a segmented waveform with equivalent bandwidth, yet is implemented with segments that are each less than the Correlation Bandwidth. As such, the segmented waveform is undistorted as its constituent spectral components similarly propagate in the random propagation channel. The time-variant channel imparts the same random modulation to each waveform segment, as we ensure that the collection interval is less than the Correlation Time, which avoids the need to estimate and compensate for intersegment modulation. We also provide suitable adjustments to each segment compensating for target motion while each segment is transmitted separately.
Forrest, Eric G., "A radar waveform for a nuclear scintillated environment" (2016). Dissertations. 104.