RESEARCH DIVISION // DIVISION_03
RF & Video Link
Performance evaluation of digital high-speed video codecs and RF control propagation. Analyzing ExpressLRS packet transmission loops, signal refraction, and glass-to-glass delay factors.
Flagship Scientific Publications
RF_PAPER_001FLAGSHIP PAPER
RF Link Engineering: ELRS Packet Rates, LQ Interpretation & Signal Propagation
ExpressLRS packet rates, signal-to-noise ratios (SNR), RSSI vs Link Quality calculations, diversity systems, and failsafe recovery protocols.
RF_PAPER_002FLAGSHIP PAPER
Video Latency Engineering: Glass-to-Glass Measurements & Encoding Pipelines
Digital encoding pipelines (H.264/H.265), variable vs fixed frame buffers, uncompressed digital latency (HDZero), and analog glass-to-glass delay constraints.
SYS_LATENCY_CALIBRATION_CURVES
Below is a comparative breakdown of average glass-to-glass latency metrics measured across various FPV video technologies under optical test bench conditions:
Analog Video (Constant line scan)8 ms
HDZero Digital (Constant uncompressed)15 ms
DJI Digital (Low Latency Mode - H.264)28 ms
Walksnail Digital (High Quality Mode - H.265)38 ms