COMMAND RANGING & TELEMETRY UNIT CORTEX
Is.Rev.
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Page 158
3.6.3.4.2.
“Ground Correction”
Parameter
Ground Correction
(
∆𝚽𝑮𝑹𝑶𝑼𝑵𝑫_𝑪𝑶𝑹𝑹
)
is programmable tone by tone and only applies to «
calibration » requests. It allows to compensate for phase delays due to the presence of equipment that are used
during station calibration but are normally not inserted in the range measurement loop (typically, the RF Test
Loop Translator and associated couplers and connection cables, mounted in the antenna hub for converting and
routing the uplink signal to the downlink path).
3.6.3.4.3.
“Board Correction”
Parameter
Board Correction
(
∆𝚽𝑩𝑶𝑨𝑹𝑫_𝑪𝑶𝑹𝑹
)
is programmable tone by tone and only applies to « range
measurement » requests. It allows to compensate for spacecraft contribution to the range measurement.