ADS-B from a Recording
Decodes aircraft near Washington, DC from a hosted 1090 MHz ADS-B recording made at 49 dB gain, no radio needed.
- Author Marc
- Category gr-adsb
- Blocks 13
- Connections 9
- File
gr-adsb/adsb_recording.grc
Blocks used
| Block | Module | Used |
|---|---|---|
| ADS-B Decoder | gr-adsb | 1 |
| ADS-B Demod | gr-adsb | 1 |
| ADS-B Framer | gr-adsb | 1 |
| ADS-B Map | GNU Radio | 1 |
| Complex to Mag^2 | GNU Radio | 1 |
| GR World Recording | GNU Radio | 1 |
| GUI Layout | GNU Radio | 1 |
| IShort To Complex | GNU Radio | 1 |
| Message Debug | GNU Radio | 1 |
| QT GUI Range | GNU Radio | 1 |
| QT GUI Time Sink | GNU Radio | 1 |
| Throttle | GNU Radio | 1 |
| Variable | GNU Radio | 1 |
Flowgraph source
gr-adsb/adsb_recording.grc
options:
parameters:
author: Marc
comment: ''
copyright: ''
description: Decodes aircraft near Washington, DC from a hosted 1090 MHz ADS-B recording made at 49 dB gain, no radio needed.
generate_options: qt_gui
id: ADS_B_from_a_Recording
title: ADS-B from a Recording
states:
coordinate: [10, 10]
rotation: 0
state: enabled
blocks:
- name: samp_rate
id: variable
parameters:
comment: ''
value: '2000000'
states:
coordinate: [310, 20]
rotation: 0
state: enabled
- name: threshold
id: variable_qtgui_range
parameters:
comment: Raise it until only real bursts trigger
label: Detection Threshold
min_len: '200'
orient: QtCore.Qt.Horizontal
rangeType: float
start: '0.001'
step: '0.001'
stop: '0.2'
value: '0.01'
widget: counter_slider
states:
coordinate: [500, 20]
rotation: 0
state: enabled
- name: aircraft_map
id: wasm_adsb_map_sink
parameters:
affinity: ''
alias: ''
basemap: light
comment: "Live aircraft state from the decoder;\nselect a row or marker for details"
expire_seconds: '60'
name: '"Aircraft near the recording site"'
receiver_latitude: '0'
receiver_longitude: '0'
show_labels: 'True'
show_receiver: 'False'
stale_seconds: '15'
trail_seconds: '300'
units: aviation
update_time: '0.25'
states:
coordinate: [960, 620]
rotation: 0
state: enabled
- name: bursts
id: qtgui_time_sink_x
parameters:
affinity: ''
alias: ''
alpha1: '1'
alpha10: '1'
alpha2: '1'
alpha3: '1'
alpha4: '1'
alpha5: '1'
alpha6: '1'
alpha7: '1'
alpha8: '1'
alpha9: '1'
autoscale: 'True'
axislabels: 'True'
color1: blue
color10: dark blue
color2: red
color3: green
color4: black
color5: cyan
color6: magenta
color7: yellow
color8: dark red
color9: dark green
comment: ''
ctrlpanel: 'False'
entags: 'True'
grid: 'True'
label1: Burst power
label10: Signal 10
label2: Signal 2
label3: Signal 3
label4: Signal 4
label5: Signal 5
label6: Signal 6
label7: Signal 7
label8: Signal 8
label9: Signal 9
legend: 'True'
marker1: '-1'
marker10: '-1'
marker2: '-1'
marker3: '-1'
marker4: '-1'
marker5: '-1'
marker6: '-1'
marker7: '-1'
marker8: '-1'
marker9: '-1'
name: ADS-B bursts
nconnections: '1'
size: '2048'
srate: samp_rate
stemplot: 'False'
style1: '1'
style10: '1'
style2: '1'
style3: '1'
style4: '1'
style5: '1'
style6: '1'
style7: '1'
style8: '1'
style9: '1'
tr_chan: '0'
tr_delay: '0'
tr_level: '0'
tr_mode: qtgui.TRIG_MODE_FREE
tr_slope: qtgui.TRIG_SLOPE_POS
tr_tag: ''
type: float
update_time: '0.1'
width1: '1'
width10: '1'
width2: '1'
width3: '1'
width4: '1'
width5: '1'
width6: '1'
width7: '1'
width8: '1'
width9: '1'
ylabel: Power
ymax: '1'
ymin: '0'
yunit: ''
states:
coordinate: [510, 550]
rotation: 0
state: enabled
- name: decoded_planes
id: blocks_message_debug
parameters:
affinity: ''
alias: ''
comment: ''
en_uvec: 'False'
log_level: info
states:
coordinate: [1020, 420]
rotation: 0
state: enabled
- name: decoder
id: adsb_decoder
parameters:
affinity: ''
alias: ''
comment: ''
error_corr: '"Conservative"'
maxoutbuf: '0'
minoutbuf: '0'
msg_filter: '"Extended Squitter Only"'
print_level: '"Brief"'
states:
coordinate: [510, 410]
rotation: 0
state: enabled
- name: demod
id: adsb_demod
parameters:
affinity: ''
alias: ''
comment: ''
fs: samp_rate
maxoutbuf: '0'
minoutbuf: '0'
states:
coordinate: [80, 420]
rotation: 0
state: enabled
- name: framer
id: adsb_framer
parameters:
affinity: ''
alias: ''
comment: ''
fs: samp_rate
maxoutbuf: '0'
minoutbuf: '0'
threshold: threshold
states:
coordinate: [1380, 250]
rotation: 0
state: enabled
- name: mag_squared
id: blocks_complex_to_mag_squared
parameters:
affinity: ''
alias: ''
comment: The framer works on power, not complex samples
maxoutbuf: '0'
minoutbuf: '0'
vlen: '1'
states:
coordinate: [1050, 260]
rotation: 0
state: enabled
- name: rec
id: wasm_gr_world_recording
parameters:
affinity: ''
alias: ''
comment: ''
length: '0'
maxoutbuf: '0'
minoutbuf: '0'
offset: '0'
progress: 'True'
recording: adsb_dc_area_49dBgain
repeat: 'True'
type: short
states:
coordinate: [10, 250]
rotation: 0
state: enabled
- name: throttle
id: blocks_throttle2
parameters:
affinity: ''
alias: ''
comment: Plays the repeating recording at its original sample rate
ignoretag: 'True'
limit: time
maximum: '0.1'
maxoutbuf: '0'
minoutbuf: '0'
samples_per_second: samp_rate
type: complex
vlen: '1'
states:
coordinate: [710, 240]
rotation: 0
state: enabled
- name: to_complex
id: blocks_interleaved_short_to_complex
parameters:
affinity: ''
alias: ''
comment: ''
maxoutbuf: '0'
minoutbuf: '0'
scale_factor: '32768'
swap: 'False'
vector_input: 'False'
states:
coordinate: [390, 260]
rotation: 0
state: enabled
- name: wasm_gui_layout_0
id: wasm_gui_layout
parameters:
affinity: ''
alias: ''
columns: '12'
comment: ''
layout: '{"aircraft_map":[0,0,6,5],"bursts":[6,1,6,3],"rec":[6,4,6,1],"threshold":[6,0,6,1]}'
row_height: '60'
states:
coordinate: [790, 20]
rotation: 0
state: enabled
connections:
- src_blk_id: decoder
src_port_id: decoded
snk_blk_id: aircraft_map
snk_port_id: decoded
- src_blk_id: decoder
src_port_id: decoded
snk_blk_id: decoded_planes
snk_port_id: print
- [demod, '0', bursts, '0']
- src_blk_id: demod
src_port_id: demodulated
snk_blk_id: decoder
snk_port_id: demodulated
- [framer, '0', demod, '0']
- [mag_squared, '0', framer, '0']
- [rec, '0', to_complex, '0']
- [throttle, '0', mag_squared, '0']
- [to_complex, '0', throttle, '0']
metadata:
file_format: 2
grc_version: 3.11.0.0