Stationary radar is a type of radar system that is fixed in one location and used to detect the velocity of objects in its surrounding area. It works by sending out pulses of radio waves and measuring the time it takes for the waves to bounce back off of objects and return to the radar. The radar then uses this information to calculate the speed and direction of the objects.
Radar can be used to find a ship's velocity by measuring the Doppler shift of the radio waves that bounce off the ship. As the ship moves towards or away from the radar, the frequency of the waves will change due to the Doppler effect. By analyzing this change in frequency, the radar can calculate the ship's velocity.
There are several factors that can affect the accuracy of radar measurements, including atmospheric conditions, the curvature of the Earth, and the size and shape of the object being measured. Additionally, any interference or obstacles between the radar and the object can also impact the accuracy of the measurements.
To solve a homework problem involving stationary radar and a ship's velocity, you will need to use the formula V = λf/c, where V is the velocity of the ship, λ is the wavelength of the radar, f is the frequency of the radar, and c is the speed of light. You will also need to know the angle at which the radar is pointing and the distance between the radar and the ship.
Yes, there are some limitations to using stationary radar to find a ship's velocity. For example, if the ship is moving directly towards or away from the radar, the Doppler shift will be minimal and it may be difficult to accurately calculate the velocity. Additionally, the accuracy of the measurements can be affected by external factors such as weather conditions and signal interference.