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Stealth became the magic word in modern weapons systems. Modern work on the stealth has its roots in the
long-term labor to the visibility reduction of military aircraft through the camouflage paint schemes. Modern components for signal processing make it possible to design Active cancellation stealth system to hide the target of the radar system inquisitive, even under unstable conditions.
Achieve visibility reduction requires reduce the radar cross section (RCS) of an aircraft or a system because it seems to be on the enemy's radar detection capabilities.
To achieve this goal, this paper proposes an Active cancellation system for radar cross section reduction design using digital radio-frequency memory (DRFM) and phased array technology to generate the desired signal to cancel the reflected radar returns. Signal processing system unit (SPCU) is used for signal analysis, search the database, control, and waveform generation.
The system depends on a pre calculation approach in which an omni direction RCS, clutter, and noise databases generated in advance.
SPCU, analysis parameter of the measured radar signal, and then find the corresponding echo data (amplitude and phase parameters of the coherent echo) in the target RCS database through real-time amendment. Through the establishment of a target scattering field with the abolition of a coherent signal in the direction of the radar system detection the radar receiver stays in empty pattern synthesis. A combination of software and hardware are used to help realize this approach Active Cancellation System for radar cross section reduction to reduce the radar cross section. The result achieved by the proposed method improves visibility reduction by 20% compared to conventional methods.
Keywords: Active cancellation, coherent, Echo, radar cross section, Phased array antenna, and Stealth.
http://www.ijern.com/journal/July-2013/12.pdf
long-term labor to the visibility reduction of military aircraft through the camouflage paint schemes. Modern components for signal processing make it possible to design Active cancellation stealth system to hide the target of the radar system inquisitive, even under unstable conditions.
Achieve visibility reduction requires reduce the radar cross section (RCS) of an aircraft or a system because it seems to be on the enemy's radar detection capabilities.
To achieve this goal, this paper proposes an Active cancellation system for radar cross section reduction design using digital radio-frequency memory (DRFM) and phased array technology to generate the desired signal to cancel the reflected radar returns. Signal processing system unit (SPCU) is used for signal analysis, search the database, control, and waveform generation.
The system depends on a pre calculation approach in which an omni direction RCS, clutter, and noise databases generated in advance.
SPCU, analysis parameter of the measured radar signal, and then find the corresponding echo data (amplitude and phase parameters of the coherent echo) in the target RCS database through real-time amendment. Through the establishment of a target scattering field with the abolition of a coherent signal in the direction of the radar system detection the radar receiver stays in empty pattern synthesis. A combination of software and hardware are used to help realize this approach Active Cancellation System for radar cross section reduction to reduce the radar cross section. The result achieved by the proposed method improves visibility reduction by 20% compared to conventional methods.
Keywords: Active cancellation, coherent, Echo, radar cross section, Phased array antenna, and Stealth.
http://www.ijern.com/journal/July-2013/12.pdf
