Ashtech Real-Time

This decoder converts Thales Real-Time (DG16, G12, or Super C/A) data. The real-time data forms when data is logged externally from the receiver using a custom data logger.

The following describes the options available for this converter:

General Options

Perform pre-processing checks

If enabled, data is scanned after conversion to correct potential issues. See Pre-processing Checks for more information.

Decode MACM messages and ignore others

If both MBN/MCA and MACM records exist, only the MACM will be decoded.

Decode old-style MBN locktime

Some older units (for example, Sensor II) output locktimes with a different resolution. Enable this option to output the locktime value.

Static/Kinematic Mode

This option controls how the static/kinematic flags are set in the final GPB file. Auto will set the entire file static or kinematic according to the detected processing environment.

Parthus MACM Settings

These settings are for logging MACM records:

Decode Parthus style MACM record

Parthus units (NS100, GSU-1, and GSU-2) utilize the MACM record. However, due to timing differences, its implementation is not compatible. Therefore, enable this option.

Data interval adjustment

The GSU-1 benefits greatly by having the correct data interval entered, while the GSU-2 is best processed using the raw time and having the base interpolated onto these times. See Concatenate, Slice and Resample Files for help.

UTC Offset for GLONASS decoding

The following option is available for those users logging GLONASS measurements:

Use the following UTC offset for decoding

Allows you to define your own UTC offset rather than using the nominal or detected value. Important for GLONASS processing.

Alternate Ephemeris

Use alternate ephemeris

Enable this option if ephemeris data is missing (for example, Parthus, GSU-2) to specify an outside EPP file.

Records Supported for Ashtech Real-Time

Record

Type

Comment

MBN

Measurements

One of these records is required;

The MBN or MACM records are recommended for G12 receivers. The MACM record is designed for high-speed data output that is, 10 Hz or 20 Hz, under limited bandwidth conditions. The ITA record is for G8 receivers, while the MPC is for dual frequency receivers, such as those in the Z-series. The MCL record is an L2 codeless record.

MCA

Measurements

MPC

Measurements

MCL

Measurements

MACM

Measurements

ITA

Measurements
(C/A Code Only)

CT1

Measurements
(C/A Code Only)

CT2

Measurements
(C/A Code and L1 Phase)

CT3

Measurements
(C/A Code, L1 Phase and C/A Code)

SNV

Ephemeris

Required.

SNG

Ephemeris (GLONASS)

Required for GLONASS users.

PBN

Position

Marks the end of the record. Recommended for GrafNet users.