Using GPS Receivers 1PPS Output to Verify Time Stamp Accuracy and Measure Propagation Delay

[摘要] A simple Pulse Overlay (PO) circuit using a logic OR gate was developed to overlay a precise leading edge 1 Pulse Per Second (1PPS) time reference marker from a GPS receiver onto a Non-Return -to- Zero-Level (NRZ-L) Pulse Code Modulation (PCM) telemetry data stream to validate time stamp accuracy and measure propagation delay (PD) in telemetry equipment.

[发布日期] 2018-11-07

[学科分类] 工程和技术（综合）

[关键词] PCM TELEMETRY;GLOBAL POSITIONING SYSTEM;PULSE CODE MODULATION;CIRCUIT DIAGRAMS;TIME SIGNALS