The desired performance index is a probability of detection (Pd) of 0.9 and probability of false alarm (Pfa) below 1e-6. The design goal of this pulse radar system is to detect non-fluctuating targets with at least one square meter radar cross section (RCS) at a distance up to 5000 meters from the radar with a range resolution of 50 meters. When dealing with a Basic Pulse RADAR, the Duty Cycle (DC) is equal to which of the following: (3 things) Usually the radar bandwidth is a small fraction of the carrier frequency The detail or resolution of a radar system is dependent on two parameters: pulse length, and antenna beam width. In contrast to the continuous wave radar, the transmitter is turned off before the measurement is finished.This method is characterized by radar pulse modulation with very short transmission pulses (typically transmit pulse durations of τ ≈ 0.1 … 1 µs). An Inverse Synthetic Aperture Radar (ISAR) attains high resolution by using: Yaw angle or some rotation of the target to generate a large antenna aperture. Learn radar basics, the fundamentals of measuring basic pulsed radar in radar systems and available radar measurement solutions today. Pulse Compression This is a method which combines the high energy of a long pulse width with the high resolution of a short pulse width. Enable browser cookies for improved … The range resolution can be improved by increasing the bandwidth of the radar. Phase coded radar signal is one of the pulse-pulse modulation signal in the radar system. A multipurpose system provides radar surveillance for air traffic control purposes. The system includes four separate active phased-array antennas, each with ±45° coverage in azimuth, from 0° to 60° in elevation. P/W (µsec) Pulse Length (m) Range Resolution(m) Comments 0.5 150 75 0.8 240 120 Typical magnetron radar pulse width in velocity mode 1 300 150 2 600 300 Typical magnetron radar pulse width in reflectivity mode Based on the characteristics of matched filtering, we theoretically analyze the basic principle of the phase coded compression radar system. The radar emits a short pulse that reflects o the surface of the earth and returns to the antenna. High Resolution Radar. In the Matlab platform, we set up a simulation model which is used for matching filter, when the radar transmitting signal is Barke code signal. 25 nm. The following table indicates the pulse length and corresponding range resolution for various pulse widths. Each antenna element of each phased-array antenna is coupled by a low-loss path to the solid-state amplifier associated with a transmit-receive (TR) module. The pulse is frequency modulated, which provides a method to further resolve targets which may have overlapping returns. A radar display in which North is always at the top of the screen is a. ... What is the distance in nautical miles to a target if it takes 308.5 microseconds for the RADAR pulse to travel from the RADAR antenna to the target and back. The pulse length dictates the spatial resolution in the direction of energy propagation (this is known as the "range direction"), while the antenna beam width determines the resolution cell in the flight, or "azimuth" direction. Pulse radar emits short and powerful pulses and in the silent period receives the echo signals. The panel control that can be used to improve bearing resolution: Gain. Simulation Research on how to Improve the Range Resolution of Pulse Compression Radar Based on Phase Coding Is dependent on two parameters: pulse length and corresponding range resolution can be improved increasing. 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