What is RCS in antenna?
Radar cross-section (RCS) is a measure of how detectable an object is by radar.
What is RCS reduction?
Abstract: Reduction of radar cross sections (RCS) is one of the major problems in stealth technology. Basic techniques used for RCS reduction are well known. They involve appropriate shaping, use of radar absorbing materials (RAMs), and passive and active cancellation of the scattered jield.
How is RCS calculated?
A target’s RCS (σ) is most easily visualized as the product of three factors: σ = Projected cross section x Reflectivity x Directivity . RCS(σ) is used in Section 4-4 for an equation representing power reradiated from the target.
Does RCS depend on frequency?
The RCS of a target depends on the aspect angle, frequency, and polarization. When the object dimension is much greater than the wavelength, the RCS of a conducting plate with a physical area A observed at the normal direction can be approximated by the product of the effective gain of the plate and the physical area.
What material is invisible to radar?
Non-metallic airframe. Dielectric composite materials are more transparent to radar, whereas electrically conductive materials such as metals and carbon fibers reflect electromagnetic energy incident on the material’s surface.
How does RCS work?
Rich Communication Services (RCS) is a communication protocol between mobile telephone carriers and between phone and carrier, aiming at replacing SMS messages with a text-message system that is richer, provides phonebook polling (for service discovery), and can transmit in-call multimedia.
What is RCS measurement?
Radar cross section RCS is the measure of an object’s ability to reflect radar signal in the direction of the radar receiver i.e. it is the measure of the ratio of backscatter per steradian (unit solid angle) in the direction of the radar (from the target) to the power density that is intercepted by the target.
Does plastic reflect radar?
Radar Cross Section (RCS) is a measure of how detectable an object is by radar. The signal sent by the radar is reflected off the surface of the detected object, and captured by the radar receiver. Usually radar signals pass through materials like plastic, but are reflected off materials like metals.
Are stealth aircraft detectable?
While no aircraft is totally invisible to radar, stealth aircraft make it more difficult for conventional radar to detect or track the aircraft effectively, increasing the odds of an aircraft successfully avoiding detection by enemy radar and/or avoiding being successfully targeted by radar guided weapons.
What can block radar?
The silicon material features embedded rings of a metal alloy called galinstan, which can block specific radar pings by absorbing them, depending upon how the material is stretched. If it works how the researchers say it does, it could cloak stealth aircraft, making them harder to detect by radar.
Does RCS money cost?
Google also reiterates that the Messages-provided RCS/chat features are free, though you are responsible for the cost of any associated data.
What is rich messaging?
The native messaging experience Google offers Android devices also offers exciting rich messaging capabilities such as the ability to share real-time updates, book appointments, and complete transactions within the messaging conversation. A growing number of organizations are taking advantage of these features.