High‑Throughput Record and Playback of Ultra‑Wideband RF Signals: Challenges in Data Bus, SSD, and Memory
Recording and replaying ultra‑wideband RF signals (e.g., 1 GHz instantaneous bandwidth) demands a sustained data rate of 8‑10 GB/s. But SSDs slow down dramatically after their cache fills, PCIe buses become choked by CPU‑side lane limits, and memory gets hammered by multiple copies and transfers. Here’s why – and what the real bottlenecks are.
RF Metrics Made Simple: SNR, SINAD, and SFDR – Finally Get Them Straight
Struggling with SNR, SINAD, and SFDR? Think of noise as random grain in a dark photo, and distortion as lens flare in bright light. SFDR is the real killer – one big false signal can waste a million‑dollar missile. Let’s clear them up with a real calculation.
Polarization Radar: The Electromagnetic Wave’s Art of Cloning Itself
Polarization gives radar a powerful new sense. With dual‑polarization detection, it can distinguish real targets from deceptive jamming – and tell raindrops from snowflakes.