Sinopsis
The word radar is an abbreviation for RAdio Detection And Ranging. In general, radar systems use modulated waveforms and directive antennas to transmit electromagnetic energy into a specific volume in space to search for targets. Objects (targets) within a search volume will reflect portions of this energy (radar returns or echoes) back to the radar. These echoes are then processed by the radar receiver to extract target information such as range, velocity, angular position, and other target identifying characteristics.
Radars can be classified as ground based, airborne, spaceborne, or ship based radar systems. They can also be classified into numerous categories based on the specific radar characteristics, such as the frequency band, antenna type, and waveforms utilized. Another classification is concerned with the mission and/or the functionality of the radar. This includes: weather, acquisition and search, tracking, track-while-scan, fire control, early warning, over the horizon, terrain following, and terrain avoidance radars. Phased array radars utilize phased array antennas, and are often called multifunction (multimode) radars. A phased array is a composite antenna formed from two or more basic radiators. Array antennas synthesize narrow directive beams that may be steered mechanically or electronically. Electronic steering is achieved by controlling the phase of the electric current feeding the array elements, and thus the name phased array is adopted.
Content
- Introduction to Radar Basics
- Pulsed Radar
- Noise Figure
- Radar Detection
- Radar Waveforms
- The Radar Ambiguity Function
- Pulse Compression
- Surface and Volume Clutter
- Moving Target Indicator (MTI) and Clutter Mitigation
- Phased Arrays
- Target Tracking
- Electronic Countermeasures (ECM)
- Radar Cross Section (RCS)
- High Resolution Tactical Synthetic Aperture Radar (TSAR)
- Signal Processing
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