MESSENGER RSS Light Time Record (LTF4)

LTF4 – PDS4 Light Time Record

Instrument: MESSENGER Radio Science Experiment

PDS4 Bundle: urn:nasa:pds:mess-rs-rawDOI: 10.17189/tcy9-gv38

For more information about RSS LTF4 products, see the LTF Product SIS.

The Radio Science Subsystem (RSS) Light Time Record (LTF4) files provide one-way light travel time values for both the upleg and downleg directions between the MESSENGER spacecraft and the three Deep Space Communications Complex (DSCC) facilities. This product was produced by the navigation team every month or so during mission operations and on selected intervals from improved reconstructed ephemeris. The data are in table form.

RSS LTF4 products have the following file names:

MESS_RS_yyyyddd_zzzzeee_LTF.TAB (with detached PDS label)

where:

MESS = MESSENGER mission

RS = Radio Science Subsystem

yyyy = the LTF data start year

ddd = the start day of year

zzzz = the stop year

eee = the stop day of year

LTF = the product type is Light Time file

In ODE, LTF4 products have the following product IDs:

mess_rs_yyyyddd_zzzzeee_ltf