RADAR measures speed by which principle?Group of answer choicesSynthetic apertureDoppler effectRadar Cross Section (RCS)Range and bearing

RADAR is effective under which condition?Group of answer choicesAll of the options are correctFogSmokeNight

RADAR signals travel at what speed?Group of answer choicesSpeed of lightMach 1HypersonicSpeed of sound

A radar signal contains amplitude and phase information. is the strength of the radar response and is the fraction of one complete sine wave cycle (a single SAR wavelength). The phase of the SAR image is determined primarily by the distance between the satellite antenna and the ground targets.A satellite SAR can observe the same area from slightly different look angles. This can be done either simultaneously (with two radars mounted on the same platform) or at different times by exploiting repeated of the same satellite. The distance between the two satellites (or orbits) is called .

Karl was suspicious that cars driving down his street were often driving faster than the speed limit of 25mph. He called the police department and complained. In response the police department set up a radar speed sign (shown in the image below) and recorded the speeds of vehicles for a day.Here is the report they obtained after observing speeds for a day.Mean Speed 28.2 mphMinimum Speed 18 mphMaximum Speed 43 mphMedian Speed 25 mph90th Percentile of Speed 33.1 mph  Which of the following would be a correct statement to make about the information shown in the above report?Group of answer choicesThe fastest car observed was driving 28.2 mph.One in every 10 of the vehicles observed (10%) was driving faster than 33.1 mph.The typical speed of vehicles that day was around 18 mph.The average speed of 28.2 was under the speed limit, so it seems that, at least on average, cars are going the correct speed.Cars all appear to have been driving very quickly that day as the slowest vehicle speed recorded was still higher than the speed limit.

Calculate range resolution of a synthetic aperture radar, if the pulse width is 3μsec. (Assume c = 3 x 108 m/s) 450m 900m 300m 600m