Radar Position Estimation by Sequential Irradiation of ESM Receivers

Area of Science:

• Electromagnetics and Signal Processing
• Navigation and Positioning Systems

Background:

• Accurate 2D signal source localization is critical for various applications.
• Existing methods may face limitations in dynamic environments or specific signal characteristics.

Purpose of the Study:

• To introduce and describe a novel 2D signal source localization technique.
• To provide a geometric representation and mathematical model for the proposed method.
• To analyze the accuracy and performance of the new localization approach.

Main Methods:

• The Inscribed Angle (InA) technique measures time differences of sequential target antenna irradiation.
• Utilizes Electronic Support Measures (ESM) receivers and assumes a rotating target antenna with constant angular velocity.
• Employs three time-synchronized sensors in a Line of Sight (LOS) environment; irradiation time linked to maximum Received Signal Strength (RSS).

Main Results:

• A detailed description of the InA localization method, including geometric representation and model.
• Analysis demonstrating the achievable accuracy of the InA positioning technique.
• A derived method to enhance the accuracy of irradiation time estimation for improved positioning.

Conclusions:

• The Inscribed Angle (InA) technique offers a viable new method for 2D signal source localization.
• The method's performance and accuracy are validated through extensive simulations.
• The InA technique shows promise for enhancing directional finding and target tracking capabilities.