What are the fundamentals of radar?
Generally, radar systems consist of three major subsystems: the transmitter, the receiver, and signal processing subsystems as shown in Fig. 1.2. The antenna serves as the electromagnetic interface to the outside. The transmitter subsystem functions as the source of the signal.
What is radar signal processing?
The signal processor is that part of the system which separates targets from clutter on the basis of Doppler content and amplitude characteristics. In modern radar sets the conversion of radar signals to digital form is typically accomplished after IF amplification and phase sensitive detection.
What are the 3 major components of radar?
A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the object(s).
What is the role of DSP in radar signal processing?
At the transmitter end, it generates and shapes the transmission pulses, controls the antenna beam pattern while at the receiver, DSP performs many complex tasks, including STAP (space time adaptive processing) – the removal of clutter, and beamforming (electronic guidance of direction).
What is basic radar system?
What is a Radar System? RADAR stands for Radio Detection and Ranging System. It is basically an electromagnetic system used to detect the location and distance of an object from the point where the RADAR is placed. It works by radiating energy into space and monitoring the echo or reflected signal from the objects.
How many types of radars are there?
Radars can be classified into the following two types based on the type of signal with which Radar can be operated. Now, let us discuss about these two types of Radars one by one.
What are the advantages of DSP?
Advantages of digital signal processing DSP offers high accuracy. Hence, filters designed in DSP have tighter control over the output accuracy. Comparatively cheaper than an analog counterpart. Reconfiguration is very easy and only code or DSP program needs to be flashed after changes as per requirement.
What is the working principle of a radar?
RADAR : Working Principle Radar Measurements •Metric Coordinates of Detected Targets –Range: R = c / 2; c = speed of light, m/s = round-trip echo time, s –Range Rate: v r = f d /2 v r = target radial velocity, m/s wavelength of RF Txmit pulse, m f d = Doppler freq. shift of echo, Hz –Azimuth / Elevation
What is an RF radar?
RADAR = Radio Detection and Ranging • Detects targets by receipt of reflected echoes from transmitted RF pulses • Measures metric coordinates of detected targets: – Range – Doppler/velocity of targets – Angle (azimuth and/or elevation)
What is the most fundamental problem in radar?
The most fundamental problem in radar is detection of an object or physical phenome- non. This requires determining whether the receiver output at a given time represents the echo from a reflecting object or only noise.
When did radar start being used in the United States?
The year 1936 also saw the U.S. Army Signal Corps begin active radar work, leading in 1938 to its first operational sys- tem, the SCR-268 antiaircraft fire control system, and in 1939 to the SCR-270 early warning system, the detections of which were tragically ignored at Pearl Harbor.