monteria

Information Dense Antennas (IDA) for HF Direction-Finding and Tracking g g

© Copyright Monteria, LLC, Mt. Airy, MD USA

3-D/IDAmonteria

What is an ‘IDA’ Antenna?

Information Dense Antenna (IDA): Self-aware antenna which

senses the passage of an arriving RF wave front through itssenses the passage of an arriving RF wave front through its

own Electromagnetic field using a Cartesian base

Three unique capabilities:

1 - Exploitation of Polarization – 3-pole antennas

2 - Characterize Radio waves as a 3-D vector

3 - Exploit Vector Characteristics – not only intensity

© Copyright Monteria, LLC, Mt. Airy, MD USA

3-D/IDAmonteria

3-D/IDA – How does it work?

During one wave period, the locus of the electric field vector E(t) sweeps out an ellipse, the polarization ellipse. E(t), and hence the plane of the ppolarization ellipse, is alwaysperpendicular to the DOA, which is parallel to the wave vector, k.is parallel to the wave vector, k. IDA utilizes this physical fact, measuring the full three-dimensional field using threedimensional field using three antennas.

© Copyright Monteria, LLC, Mt. Airy, MD USA

Achievements with the IDA antennamonteria

44--6 6 years aheadyears ahead of industryyy f y

Achievement of significant size reductions

Achievement of significant accuracyAchievement of significant accuracy improvements

Multiple Generations of ‘Smart’ Antennas:Antennas:

1st – Static Gain

2nd – Dynamic Gain (‘Smart’)

3rd – Dynamic 3-D Gain (3-D ‘Smart’)

4th – Broadband Dynamic 3-D gain

© Copyright Monteria, LLC, Mt. Airy, MD USA

IDA 3-D System Advantagesmonteria

Small Form Factor: mobile, portable or blwearable

Only 2 of 3 components needed for azimuth determination

M d fl ti / lti th bManaged reflections/multi-path – can be suppressed

Excellent against circularly-polarized RF like NVIS, airborne or space-based targets, p g

Noise less than 1-bit – critical against LPI signals

Free Space/Infinite Plane accuracy +/- 1 p f ydegree in bearing AND elevation

SSL achievable

© Copyright Monteria, LLC, Mt. Airy, MD USA

IDA 3-D Technique Block Diagrammonteria

3D Antenna ”Polarization Cell”

ch2

ch3

Digital

Radio

RadioInterface

Human

InterfaceElectromagnetic (EM) Waves

Interpretable Data

AntennaInterface

ch1

Comput-ational

UserInput

( ) Waves

Model

© Copyright Monteria, LLC, Mt. Airy, MD USA

IDA DF System – VHF-UHF Antennasmonteria

© Copyright Monteria, LLC, Mt. Airy, MD USA

Tailored Java, Windows and Linuxmonteria

© Copyright Monteria, LLC, Mt. Airy, MD USA

Thank you

t imonteria

© Copyright Monteria, LLC, Mt. Airy, MD USA