---
name: "GPSsmooth"
section: "1"
platform: "linux"
package: "flightgear"
version: "1:2020.3.19+dfsg-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/GPSsmooth"
---

# GPSsmooth(1)

send NMEA-formatted GPS data to a FlightGear instance

## NAME

GPSsmooth - send NMEA-formatted GPS data to a FlightGear instance

## SYNOPSIS

**GPSsmooth** **--help** \| **--file** *file\_name* \[**--hertz** *hertz*\] \[**--host** *hostname*\] \[**--broadcast**\] \[**--fdm-port** *port*\] \[**--ctrls-port** *port*\]

## DESCRIPTION

**GPSsmooth** is a utility that reads a text file containing GPS data in NMEA format, parses it and sends it to a FlightGear instance for replaying.

## OPTIONS

- **--help**

  Display usage information and exit.

- **--file** *file\_name*

  Read GPS data from *file\_name*. This option is mandatory if **--help** is not specified.

- **--hertz** *hertz*

  Specify the frequency to use for sending data to the FlightGear instance. By default, events are sent at a frequency of **60** Hz.

- **--host** *hostname*

  Send the data to the FlightGear instance running on *hostname*.

  If **--host** is not specified, the default is to send the data to **localhost**.

- **--broadcast**

  Send flight data model and control data as broadcast packets.

- **--fdm-port** *port*

  Set the port flight data model data should be sent to. By default, data is sent to port **5505**.

- **--ctrls-port** *port*

  Set the port control data should be sent to. By default, data is sent to port **5506**.

## EXIT STATUS

**GPSsmooth** exits with **0** on success, with **-1** if the syntax of the command-line arguments is wrong or an error occurs.

## SEE ALSO

[**fgfs**(1)](/fgfs/1.md), [**MIDGsmooth**(1)](/MIDGsmooth/1.md), [**UGsmooth**(1)](/UGsmooth/1.md)