RinexNavFile Object

Description

The RinexNavFile object provides functionalities for reading and writing Broadcast Ephemeris data to and from a Rinex Navigation file. This is an ASCII file of GPS Broadcast Ephemeris data conforming to the RINEX standard.

RinexNavFiles (also known as GPS Broadcast Ephemerides) contain position, velocity, and clock information for all the satellites of the GPS constellation. FreeFlyer has the ability to read and write RinexNavFiles, but does not generate Broadcast Ephemeris data when propagating spacecraft. The time system is GPS Time, and positions and velocities are in the ECEF reference frame, which FreeFlyer converts into the ICRF frame.

Inheritance Hierarchy: Object->RinexNavFile

Available In Editions:

Mission

Timing Precision Mode

This page describes functionality in millisecond timing precision mode. Millisecond timing precision mode is deprecated and will be removed in a future release. We recommend that you migrate your Mission Plans to nanosecond timing precision mode.

Click here to see the documentation for this object in nanosecond timing precision mode.

Name	Description	Attributes
A0	The A0 term from the almanac polynomial to compute the UTC time.	Type: Variable Access: Read-Only
A1	The A1 term from the almanac polynomial to compute the UTC time.	Type: Variable Access: Read-Only
Comments	Comments for the header of the Rinex Navigation file.	Type: StringArray Access: Read/Write
DeclaredName	The name of the object as declared.	Type: String Access: Read-Only
Filename	The name and path of the file to be created. If no path is declared then the file will be created in the local directory where the mission plan resides.	Type: String Access: Read/Write
FinalTOE	The Time Of Ephemeris (TOE) of the final ephem in the Rinex Navigation file.	Type: Variable Access: Read-Only Units: day
InitialTOE	The Time Of Ephemeris (TOE) of the first ephem in the Rinex Navigation file.	Type: Variable Access: Read-Only Units: day
IonAlpha	The Ionosphere properties A0-A3 from the almanac.	Type: Array Access: Read-Only
IonBeta	The Ionosphere properties B0-B3 from the almanac.	Type: Array Access: Read-Only
LeapSeconds	The number of Leap Seconds between GPS time and UTC.	Type: Variable Access: Read-Only
Name	The name displayed for this object in output windows such as views, plots, and reports.	Type: String Access: Read/Write
NumberOfComments	The number of comments contained in the Rinex Navigation file.	Type: Variable Access: Read/Write
NumberOfEphems	The number of Ephems contained in the Rinex Navigation file.	Type: Variable Access: Read-Only
NumberOfPRNs	The number of GPS PRNs contained in the Rinex Navigation file.	Type: Variable Access: Read-Only
ObjectId	The unique identifier for the object.	Type: Variable Access: Read-Only
ObjectType	The type of the object.	Type: String Access: Read-Only
RinexVersion	The Rinex Version of the Navigation file.	Type: Variable Access: Read-Only
SatelliteIds	The identification of all the satellites in the Rinex Navigation file. The string includes GNSS Constellation name and the satellite number.	Type: StringArray Access: Read-Only
UTCReferenceTime	The UTC Reference time (seconds into GPS week).	Type: Variable Access: Read-Only Units: s
UTCReferenceWeek	The UTC Reference GPS week number.	Type: Variable Access: Read-Only