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make readsb's built-in autogain the default

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kx1t 2024-11-21 08:55:36 -05:00 committed by Matthias Wirth
parent e32e9ee1a2
commit 3739ccf67d
4 changed files with 26 additions and 13 deletions
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30
README.md
View file

@ -10,10 +10,12 @@
- [Mandatory Parameters](#mandatory-parameters)
- [Optional Parameters](#optional-parameters)
- [Getting ADSB data to the Ultrafeeder](#getting-adsb-data-to-the-ultrafeeder)
- [Connecting to an SDR or other hardware device](#connecting-to-a-sdr-or-other-hardware-device)
- [Connecting to an SDR or other hardware device](#connecting-to-an-sdr-or-other-hardware-device)
- [Mandatory parameters](#mandatory-parameters-1)
- [Optional/Additional Parameters](#optionaladditional-parameters)
- [AutoGain for RTLSDR Devices](#autogain-for-rtlsdr-devices)
- [Ultrafeeder AutoGain for RTLSDR Devices](#ultrafeeder-autogain-for-rtlsdr-devices)
- [Using `readsb`'s built-in AutoGain (recommended)](#using-readsbs-built-in-autogain-recommended)
- [Using the original AutoGain algorithm](#using-the-original-autogain-algorithm)
- [Connecting to external ADSB data sources](#connecting-to-external-adsb-data-sources)
- [All-in-One Configuration using `ULTRAFEEDER_CONFIG`](#all-in-one-configuration-using-ultrafeeder_config)
- [Networking parameters](#networking-parameters)
@ -50,6 +52,7 @@
- [Output from Ultrafeeder to InfluxDBv2](#output-from-ultrafeeder-to-influxdbv2)
- [Message decoding introspection](#message-decoding-introspection)
- [Minimalist setup](#minimalist-setup)
- [Offline maps](#offline-maps)
- [Logging](#logging)
- [Getting help](#getting-help)
- [License and Trademarks](#license-and-trademarks)
@ -240,12 +243,20 @@ If you want to connect your SDR to the container, here's how to do that:
| Variable | Description | Controls which `readsb` option | Default |
| ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------ | -------- |
| `READSB_GAIN` | Set gain (in dB). Use `autogain` to have the container determine an appropriate gain, more on this below. | `--gain=<db>` | Max gain |
| `READSB_GAIN` | Set gain (in dB). Use `autogain` to have the container determine an appropriate gain, more on this below. Leave this parameter empty (recommended) to use [`readsb`'s built-in auto-gain](#using-readsbs-built-in-autogain-recommended), or set it to `omit` or `off` to not pass this parameter to `readsb` | `--gain=<db>` | Max gain |
| `READSB_RTLSDR_PPM` | Set oscillator frequency correction in PPM. See [Estimating PPM](https://github.com/sdr-enthusiasts/docker-readsb-protobuf/#estimating-ppm) | `--ppm=<correction>` | Unset |
##### AutoGain for RTLSDR Devices
##### Ultrafeeder AutoGain for RTLSDR Devices
If you have set `READSB_GAIN=autogain`, then the system will take signal strength measurements to determine the optimal gain. The AutoGain functionality is based on a (slightly) modified version of [Wiedehopf's AutoGain](https://github.com/wiedehopf/autogain). AutoGain will only work with `rtlsdr` style receivers.
###### Using `readsb`'s built-in AutoGain (recommended)
As of November 2024, we are recommending to leave the `READSB_GAIN` parameter empty by not including it in your configuration. This will engage the new built-in [autogain of `readsb`](https://github.com/wiedehopf/readsb?tab=readme-ov-file#autogain). This new algorithm uses continuous noise and signal strength measurements and is highly effective in environments with a mix of strong, local signals and distant, weak signals.
(Experts only:) If you want to pass in any autogain parameters to `readsb`, you can do so by setting `READSB_GAIN` to (for example) `READSB_GAIN=auto-verbose,0,25,31,243`. See the explanation at Wiedehopf's [`readsb` repository](https://github.com/wiedehopf/readsb?tab=readme-ov-file#autogain) for more information about these parameters
###### Using the original AutoGain algorithm
You can still use the original autogain algorithm by setting `READSB_GAIN=autogain`. That algorithm is built into the container and it will take signal strength measurements to determine the optimal gain. The AutoGain functionality is based on a (slightly) modified version of [Wiedehopf's AutoGain](https://github.com/wiedehopf/autogain). AutoGain will only work with `rtlsdr` style receivers.
Note that AutoGain is not related to the SDR's AGC setting (controlled with the `READSB_RTLSDR_ENABLE_AGC` variable). We do not recommend enabling AGC for Ultrafeeder or any other ADS-B decoder.
@ -359,7 +370,7 @@ bash <(wget -qO - https://raw.githubusercontent.com/sdr-enthusiasts/docker-adsb-
Instead of (or in addition to) using `BEASTHOST`, you can also define ADSB data ingests using the `READSB_NET_CONNECTOR` parameter. This is the preferred way if you have multiple sources or destinations for your ADSB data. This variable allows you to configure incoming and outgoing connections. The variable takes a semicolon (`;`) separated list of `host,port,protocol[,uuid=XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX]`, see the section [All-in-One Configuration using `ULTRAFEEDER_CONFIG`](#all-in-one-configuration-using-ultrafeeder_config) for explanation of these parameters.
NOTE: If you have a UAT dongle and use `dump978` to decode this, you should use `READSB_NET_CONNECTOR` to ingest UAT data from `dump978`. See example below
Note: if you have a UAT dongle and use `dump978` to decode this, you should use `READSB_NET_CONNECTOR` to ingest UAT data from `dump978`. See example below
```yaml
environment:
@ -735,7 +746,7 @@ Note - on some systems (DietPi comes to mind), `/sys/class/thermal/` may not be
#### Reducing Disk IO for Graphs1090
Note - _this feature is still somewhat experimental. If you are really attached to your statistics/graphs1090 data, please make sure to back up your mapped drives regularly_
Note - *this feature is still somewhat experimental. If you are really attached to your statistics/graphs1090 data, please make sure to back up your mapped drives regularly_
If you are using a Raspberry Pi or another type of computer with an SD card, you may already be aware that these SD cards have a limited number of write-cycles that will determine their lifespan. In other words - a common reason for SD card failure is excessive writes to it.
@ -875,7 +886,7 @@ No paths need to be mapped through to persistent storage. However, if you don't
| Path | Purpose |
| ------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------- |
| `/opt/adsb/ultrafeeder/globe_history:/var/globe_history` | Holds range outline data, heatmap / replay data and traces if enabled. _Note: this data won't be automatically deleted, you will need to delete it eventually if you map this path._ |
| `/opt/adsb/ultrafeeder/globe_history:/var/globe_history` | Holds range outline data, heatmap / replay data and traces if enabled. *Note: this data won't be automatically deleted, you will need to delete it eventually if you map this path.* |
| `/opt/adsb/ultrafeeder/timelapse1090:/var/timelapse1090` | Holds timelapse1090 data if enabled. (We recommend against enabling this feature, see above) |
| `/opt/adsb/ultrafeeder/collectd:/var/lib/collectd` | Holds graphs1090 & performance data |
| `/proc/diskstats:/proc/diskstats:ro` | Makes disk statistics available to `graphs1090` |
@ -936,7 +947,7 @@ docker exec -it ultrafeeder /usr/local/bin/viewadsb --cpr-focus 3D3ED0
## Minimalist setup
If you want to use `ultrafeeder` _only_ as a SDR decoder but without any mapping or stats/graph websites, without MLAT connections or MLAT-hub, etc., for example to minimize CPU and RAM needs on a low CPU/memory single board computer, then do the following:
If you want to use `ultrafeeder` *only* as a SDR decoder but without any mapping or stats/graph websites, without MLAT connections or MLAT-hub, etc., for example to minimize CPU and RAM needs on a low CPU/memory single board computer, then do the following:
- in the `ULTRAFEEDER_CONFIG` parameter, remove any entry that starts with `mlat` or `mlathub`. This will prevent any `mlat-client`s or `mlathub` instances to be launched. If you still want to connect the `mlat-client`(s) to external MLAT servers but you don't want to run the overhead of a MLATHUB, you can leave any entries starting with `mlat` in the `ULTRAFEEDER_CONFIG` parameter, and set `MLATHUB_DISABLE=true`
- Set the parameter `TAR1090_DISABLE=true`. This will prevent the `nginx` webserver and any websites to be launched and no `collectd` (graphs1090) or `rrd` (ADSB message history) data to be collected or retained.
@ -954,7 +965,6 @@ There is the option to use some basic offline maps limited in zoom:
- /usr/local/share/osm_tiles_offline:/usr/local/share/osm_tiles_offline
```
## Logging
All logs are to the container's stdout and can be viewed with `docker logs -t [-f] container`.

1
docker-compose.yml
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@ -28,7 +28,6 @@ services:
- READSB_LAT=${FEEDER_LAT}
- READSB_LON=${FEEDER_LONG}
- READSB_ALT=${FEEDER_ALT_M}m
- READSB_GAIN=${ADSB_SDR_GAIN}
- READSB_RX_LOCATION_ACCURACY=2
- READSB_STATS_RANGE=true
#

2
rootfs/etc/s6-overlay/scripts/mlat-client
View file

@ -83,7 +83,7 @@ if grep -qs "gpsd" <<< "$ULTRAFEEDER_CONFIG" || grep -qs "gpsd" <<< "$ULTRAFEEDE
GPSD=1
LOCATION_PERSIST=/var/globe_history/gpsd_last_location
if [[ -f "$LOCATION_PERSIST" ]]; then
read new_lat new_lon new_alt < "$LOCATION_PERSIST"
read -r new_lat new_lon new_alt < "$LOCATION_PERSIST"
fi
# initialize "old" location for gpsd movement detection
# use zero island as starting point if location persist does not exit

6
rootfs/etc/s6-overlay/scripts/readsb
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@ -33,9 +33,11 @@ fi
LOCATION_PERSIST=/var/globe_history/gpsd_last_location
if [[ -f "$LOCATION_PERSIST" ]] && { grep -qs "gpsd" <<< "$ULTRAFEEDER_CONFIG" || grep -qs "gpsd" <<< "$ULTRAFEEDER_NET_CONNECTOR"; }; then
read LAT LON ALT < "$LOCATION_PERSIST"
# shellcheck disable=SC2034
read -r LAT LONG ALT < "$LOCATION_PERSIST"
READSB_LAT=""
READSB_LON=""
# shellcheck disable=SC2034
READSB_ALT=""
fi
@ -305,6 +307,8 @@ if [[ -n "$READSB_GAIN" ]]; then
[[ "${READSB_GAIN,,}" == "autogain" ]] && gain="${READSB_AUTOGAIN_INITIAL_GAIN:-49.6}" || gain="${READSB_GAIN}"
fi
READSB_CMD+=("--gain=$gain")
elif [[ "${READSB_GAIN,,}" != "omit" ]] && [[ "${READSB_GAIN,,}" != "off" ]]; then
READSB_CMD+=("--gain=auto")
fi
##### RTL-SDR OPTIONS #####