Optimizing Transmitter Amplifier Load Impedance for Tuning Performance in a Metacognition-Guided, Spectrum Sharing Radar
Optimizing Transmitter Amplifier Load Impedance for Tuning Performance in a Metacognition-Guided, Spectrum Sharing Radar
复制标题
优化发射机放大器负载阻抗以调整元认知引导的频谱共享雷达的性能
DOI：
10.1109/radar42522.2020.9114669
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
R. Marks
中科院分区：
文献类型：
--
作者：
Adam C. Goad;Austin Egbert;Angelique Dockendorf;C. Baylis;A. Martone;R. Marks
发射机功放负载阻抗影响雷达的发射功率，进而影响雷达的最大探测距离。在频谱共享雷达中，预期操作频率在几毫秒相干处理间隔（CPI）的量级上改变，其可以在低毫秒中。虽然已经为雷达应用开发了高功率阻抗调谐器，但是其重新配置时间需要至少几百毫秒，因此显著超过CPI时间尺度并且防止在CPI内进行配置调整。我们展示了一种算法，评估和提高放大器的阻抗调谐在频谱共享元认知过程中的认知雷达。测量结果表明，使用自适应软件定义无线电平台的控制，在测试间隔内成功实现了最大平均功率。
Transmitter power amplifier load impedance impacts the transmitted power of the radar, which affects the maximum detection range. In spectrum sharing radars, the operating frequency is expected to change on the order of a few milliseconds coherent processing interval (CPI), which can be in the low milliseconds. While a high-power impedance tuner has been developed for radar applications, its reconfiguration time requires at least several hundreds of milliseconds, thus significantly exceeding the CPI time scale and preventing configuration adjustments within the CPI. We demonstrate an algorithm that assesses and improves the amplifier impedance tuning during a spectrum sharing metacognition process in a cognitive radar. Measurement results show success in achieving maximum average power over test intervals using the control of an adaptive software-defined radio platform.
影响因子：
20.6
作者：
Griffiths, Hugh;Cohen, Lawrence;Blunt, Shannon
通讯作者：
Blunt, Shannon