Table of Contents
What is the difference between MTI radar and pulse Doppler radar?
The MTI radar has a pulse repetition frequency low enough to not have any range ambiguities. It does however have many ambiguities in the Doppler domain. The pulse Doppler radar, on the other hand, is just the opposite. It has a prf large enough to avoid Doppler ambiguities, but it can have numerous range ambiguities.
What is stalo and coho?
The coho is a stable oscillator whose frequency is the same as the intermediate frequency used in the receiver. The output of the coho fc is also mixed with the local-oscillator frequency fl. The local oscillator must also be a stable oscillator and is called stalo, for stable local oscillator.
What are the limitations of MTI radar?
Following are the disadvantages of MTI Radar: ➨Blind speed does not get detected by pulse MTI radar. Blind speed is defined as magnitude of radial component of velocity of target when moving target appears as stationary target. ➨They can have doppler ambiguities.
Which one of the following is common between AESA and Pesa?
electronic scanning
10. Which one of the following is common between AESA and PESA? Explanation: One of the basic common features between the AESA and PESA is that both provide electronic scanning. This allows the use of narrow beams since the rate of scanning is very high.
What is the difference between active and passive radar?
Active The radar transmits signals and receives reflections. This is how it can be located. Passive Low radio frequencies from different transmitters are reflected by the radar and analysed without being detected.
What is the main difference between them stalo and coho?
The coho is a stable oscillator whose frequency is the same as the intermediate frequency used in the receiver. . The local oscillator must also be a stable oscillator and is called stalo, for stable local oscillator. the conventional super-heterodyned receiver.
What is the difference between AESA radar and PESA radar?
In PESA radar, all the antenna elements are connected to a single transmitter, whereas in AESA radar, each antenna element is connected to a small and solid state Transmit/ Receive Module (TRM). 3. In PESA, the transmit power comes from a single amplifier from another place in the system.
How do AESA and PESA work?
Using the doppler spectrum, the return is then evaluated to determine distance and speed of the target in relation to the radar. Both AESA and PESA can quickly shift their operating frequency to avoid electronic jamming or the radar system being located through radio direction finding.
What is the FOV of AESA radar?
The AESA radar is generally considered the most innovative and technologically-advanced type of tactical radar system. That being said, it does have one notable disadvantage — its limited field of view (FOV). Currently, the maximum FOV for a standard flat phased AESA antenna is between 90 and 120 degrees.
What is a pulse radar?
A pulse radar is a system that transmits short, powerful pulses of radio energy and then between those pulses listens for a return produced from a reflection of that wave off an object. Using the doppler spectrum, the return is then evaluated to determine distance and speed of the target in relation to the radar.