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

Knudtson, Kevin ; Moreno, Antonio

关键词: CIRCUITS;    DATA FLOW ANALYSIS;    ELECTRONIC EQUIPMENT TESTS;    GLOBAL POSITIONING SYSTEM;    LEADING EDGES;    PULSE CODE MODULATION;    PULSE DURATION;    RECEIVERS;    TELEMETRY;    TIME SIGNALS;   

RP-ID  :  NASA/TM-2019-220231,AFRC-E-DAA-TN70602

学科分类：工程和技术（综合）

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

A simple pulse overlay circuit using a logic OR gate was developed to overlay a precise leading edge 1 pulse per second time reference marker from a global positioning system receiver onto a non-return -to- zero-level pulse code modulation telemetry data stream to validate time stamp accuracy and measure propagation delay in telemetry equipment.