ntia-emitter.sigmf-ext.md

ntia-emitter Extension v1.0.0

The ntia-emitter namespace provides emitter defintion and properties.

ntia-emitter is fully compliant with the SigMF specification and conventions.

1 Global

ntia-emitter extends the Global with the following name/value pairs:

name	required	type	unit	description
emitters	false	Emitter[]	N/A	Metadata that describe emitters

1.1 Emitter Object

Emitter object has the following properties:

name	required	type	unit	description
id	true	string	N/A	Unique ID of the emitter.
description	false	string	N/A	Description of the emitter.
power	false	double	dBm	Power referenced to antenna input.
antenna	false	Antenna	N/A	Metadata that describes the antenna.
transmitter	false	HardwareSpec	N/A	Metadata that describes the transmitter.
center_frequency	false	double	Hz	Center frequency.
waveform	false	Waveform	N/A	Metadata that describes transmitted waveform.
location	false	Location	N/A	Specifies the location, speed, and bearing of the Emitter.
environment	false	Environment	N/A	Specifies the environment surrounding the Emitter.

2 Captures

ntia-emitter does not provide additional keys to Captures.

3 Annotations

ntia-emitter does not extend Annotations.

4 Example

4.1 Example

{
  "global" : {
    "core:datatype" : "rf32_le",
    "core:sample_rate" : 2.8E7,
    "ntia-emitter:emitters" : [ {
      "id" : "N5182B-1",
      "power" : 19.0,
      "antenna" : {
        "antenna_spec" : {
          "model" : "Cobham_OA2-0.3-10.0V/1505",
          "description" : "Ultra Wide Band Omni Antenna",
          "supplemental_information" : "https://www.european-antennas.co.uk/media/1638/ds1505-060510.pdf"
        },
        "type" : "omni-directional",
        "frequency_low" : 3.0E8,
        "frequency_high" : 1.0E10,
        "gain" : 2.0,
        "polarization" : "horizontal",
        "cross_polar_discrimination" : 20.0,
        "horizontal_beamwidth" : 360.0,
        "vertical_beamwidth" : 65.0,
        "voltage_standing_wave_ratio" : 2.5,
        "cable_loss" : 0.15,
        "steerable" : false,
        "elevation_angle" : 90.0
      },
      "transmitter" : {
        "model" : "N5182B",
        "version" : "v1.0.0",
        "description" : "Keysight MxG X-series RF Vector Signal Generator",
        "supplemental_information" : "https://www.keysight.com/us/en/assets/7018-03380/data-sheets/5991-0038.pdf"
      },
      "center_frequency" : 4.35E8,
      "waveform" : {
        "model" : "Waveform",
        "description" : "continuous wave"
      },
      "environment" : {
        "category" : "Underground, coal mine"
      }
    } ]
  },
  "captures" : [ ],
  "annotations" : [ ]
}