Space Programs Summary 37-58, Vol.Ⅱ The Deep Space Network For the Period May 1 to June 30, 1969

摘要

By tracking the spacecraft, the DSN is involved in the following data types:n(1) Metric: generate angles, one- and two-way doppler and range.n(2) Telemetry: receive, record, and retransmit engineering and scientific data.n(3) Command: send coded signals to the spacecraft to activate equipment to initiate spacecraft functions.nThe DSN operation is characterized by six DSN systems: (1) tracking, (2) telemetry, (3) command, (4) monitoring, (5) simulation, and (6) operations control.