VEGA
Data Repository of Passive Radar Measurements

Data sets listed in the VEGA repository can be used only for research purposes.

Any commercial use of these data sets is forbidden.
 

This database is open, contributions to the repository are welcome.

If you are interested in using the database, please send me a private request in which you briefly summarize your research goals and the planed way you would use the data sets.

Click on the Title of the data set to open the detailed description of the measurement !

Title
Frequency [MHz]
Illuminator
Hardware
Target detections
VEGAM20191219K4U0C0S6DVBT
634
DVB-T
Kerberos-4
Airplane
VEGAM20191219K4U0C0S5DVBT
634
DVB-T
Kerberos-4
Airplane
VEGAM20191219K4U0C0S4DVBT
634
DVB-T
Keberos-4
Airplane
VEGAM20191219K4U0C1S0DVBT
634
DVB-T
Kerberos-4
Airplane
VEGAM20191221HR7U0C0S0FM
90.3
FM
HeIMDALL-R7
-
VEGAM20180313HR2U0C1S0FM
89.5
FM
HeIMDALL-R2
Airplane
VEGAM20180313HR2U0C0S0FM
89.5
FM
HeIMDALL-R2
Airplane
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Field
Value
Metadata version
1.4
VEGA ID
Measurement or Simulation ID in the VEGA database
Measurement date
Has a format of ddmmyyyy
Measurement site
Name of the measurement location
Measurement objective
Short description of the main goal of the measurement configuration
Rx latitude
Radar lat. coordinate
Rx longitude
Radar long. coordinate
Hardware
Name of the receiver hardware used for the measurement
Unit ID
Hardware unit index
Radar system versions
PCB, firmware and software versions of the used radar unit
Surveillance antenna(s)
Antenna structure used for the surveillance channel(s)
Reference antenna(s)
Antenna structure used for the reference channel(s)
Surveillance antenna heading
Main direction of the surveillance antenna or antenna array
Reference antenna heading
Main direction of the reference antenna
Surveillance channel indices
Correspond to antenna channels. Counted from 0.
Reference channel indices
Correspond to the antenna channels. Counted from 0.
Ref CH Polarity
Polarization of the reference channel(s)
Surv CH Polarity
Polarization of the surveillance channel(s)
Frequency
Frequency of the measurement
IoO type
Type of the used illuminator of opportunity. Eg: FM/DVB-T/DAB ..
IoO location
Name of the IoO place
IoO latitude
List of latitude coordinates of the used illuminators
IoO longitude
List of longitude coordinates of the used illuminators
IoO EIRP
Transmit power of the IoO
IoO Polairty
Polariztation of the transmitted illuminator signal
Configuration ID
Identifes the used measurement arrangememt or radar configuration
Surveillance ID
Identifier of the data record set in the current configuration
Number of records
Number of coherent blocks that can be found in the dataset
CPI length
Time inerval of a recorded signal block
Data size
Total size in MB
Data type
Raw / IQ: Data can be raw or decimated IQ samples
Sampling frequency
Signal sample rate

The VEGA data repository stores passive radar measurement. Each data set in the repository has unique name with the following naming convention: 

 

VEGA<M/S><Date in yyyymmdd format><Hardware id>U<unit id>C<Test configuration ID>S<Surveillance ID><IoO type> 

e.g.:VEGAM20190101HR2U0C0S0FM. The first identifier (<M/S>) declares whether the data set is originated from measurement or simulation. Each measurement has metadata fields which describes the particular circumstances of the measurement or simulation environment. These fields are the following: 

 

The primary stored data in the data sets are the IQ samples. These samples are recorded in rather large  data chunks, called coherent processing blocks. Each of these coherent processing data blocks are packed into frames by the data acquisition system, named as IQ data frames. An IQ data frame is built up from a header and a payload. Each binary file which has '.iqf' extension in the 'iq' folder stores one IQ data frame. The user can import these data frames, interpret the header, extract the raw data and utilize it for his own research purposes. Documentation and reference scripts to import the IQ data frame are available bellow in this page. 

VEGA_folder_structure.png

Figure 1: Standard folder structure of a VEGA dataset

Beside this, there is suplementary information available where applicable. Figure 2 shows the standard folder structure. The results folder stores range-Doppler matrix and hit matrix pictures from reference processings. The root folder of the K-th reference processing is named as PK. The parameters of each of the reference processing is summarized in the 'dsp_params' file.  

The target_information folder stores the real latitude and longitude coordinates of the target with timestamps if available. For aerial targets this information is obtained from FlightRadar24. For other cooperative targets, GPS tracker is used to obtain the same information. Other than this, the actual range and Doppler coordinates of the detected target is also available for all the coherent processing blocks in which  valid detection can be found. 

The following list summarize the available target information fields and their designation. 

Target information fields: 

  • List of the identified targets in the data set 

  • Each target has the following descriptor fields: 

    • Target ID                      : (Unique ID, start indexing from 0)

    • First time index            : Index of the first coherent processing block in which the target can be detected  (according to reference processing) 

    • Last time index            : Index of the last coherent processing block in which the target can be detected (according to reference processing) 

    • Target denomination    : (e.g.: Landing airplane/ moving card, closing train, receeding pedestrian,... ) 

    • Target type                   : (e.g.:  A320) 

    • Target RD trajectory     : Range and Doppler values  of the degected target 

    • Real Target trajectory   : (Ideally this should be a list of lat,long positions) 

Documentation of the IQ Data Frame can be found here:
Version: 1.1, Updated: 2020 01 27

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Example python code to convert the IQ Data Frames to MATLAB compatible file
can be found in the following GIT repository:

Octocat.png

Referencing:

You can cite the used data set in the following format:


Tamas Pető (2019), Vega: Data Repository of Passive Radar Measurements, <DATA SET ID>, [Data set]. http://tamaspeto.com/vega 

References to VEGA:

  1. L. Bendjama, T. Laroussi and A. Mezache, "Statistical Analysis and New Modeling of Real Clutter Signal in FM Radio-based Passive Radars," 2019 6th International Conference on Image and Signal Processing and their Applications (ISPA), Mostaganem, Algeria, 2019, pp. 1-6.