r. e = radius of earth, 6374 km . Useful converters and calculators. (a) Derive the maximum range for a Radar system, from first principles. The system is a monostatic radar operating at 1 GHz with a peak transmit power of 1 MW and pulse width of 0.2 μs. The maximum range of conventional radar can be limited by a number of factors: Line of sight, which depends on the height above the ground. For (Pulse repetition frequency) And (Pulse repeition time) We proceed to calculate the Maximum unambiguous range of radar, Where Pulse Width. ANSWER: 2 KHz (28) Aircraft surveillance radars mostly operate in (A) C band (B) S band (C) L band (D) X band View Answer / Hide Answer. If a target is located at a range of 50 miles, how many pulses will the radar have transmitted before the first echo from the target arrives? radar (a) 100 km (b) 200 km [x] (c) 300 km (d) 400 km (e)none of the above 2 Pulse radar, resolution A radar transmits a pulse of width of 4 sec with pulse repetition interval 4 msec. What is the maximum unambiguous range of this radar in km? This MATLAB function returns the maximum detectable range for a SAR. R = range (distance) to the targets in km. Explanation: We need to define our variables. Consider a radar with a PRF of 7.5 kHz. https://www.radartutorial.eu/01.basics/Minimal Measuring Range.en.html If a target is located at a range of 50 miles, how many pulses will the radar have transmitted before the first echo from the target arrives? A target is moving radially towards generator with a velocity of 360 Km/hour. This MATLAB function converts the range of a dechirped linear FMCW signal to the corresponding beat frequency. The transmitter and receiver gain is 20 dB. Following equation or formula is used for radar PRF to unambiguous range converter. We do not have the Pulse Width, so we can think that can be omited. 1 See answer achmad1926 is waiting for your help. 187.5 km, 1250 micro seconds Range = C / 2 x PRF PRP = 1/800 = 0.00125 seconds or 1250 micro seconds (0.00125 x 1000,000) Which one of the following is an advantage of a secondary radar system when compared to a primary radar system? Estimate the range for a side-looking SAR imaging a target with a radar cross-section (RCS) of 1 m 2. VITEEE 2006: The maximum range dmax of radar is (A) proportional to the cube root of the peak transmitted power (B) proportional to the fourth root of https://www.allaboutcircuits.com/tools/radar-maximum-range-calculator Following is the list of useful converters and calculators. The frequency of the target will be (A) 1 KHz (B) 1.5 KHz (C) 2 KHz (D) 300 Hz View Answer / Hide Answer. The required receiver SNR is 10 dB. The Maximum Range of a Radar Set Abstract: Formulas are derived which may be used to calculate the maximum range of a radar set. The system has a 40 dB transmitter gain and a 20 dB receiver gain. (June 2006) 36. Radar range equation is useful to know the range of the target theoretically.In this chapter, we will discuss the standard form of Radar range equation and then will discuss about the two modified forms of Radar range equation. What is the maximum unambiguous range, Ru, of this radar in km? Estimate the output SNR for a target with an RCS of 1 m² at a range of 50 km. H 0 = height of the radar above sea level = station elevation + tower height . The system temperature has the default value of 290 K. If you are lucky to get the axi double strength and range bonus, you can get 196m range on cast. When the detection range exceeds 3000 km, rises sharply, and it reaches about 3.7° when the detection range is 4000 km. The antenna gain is 30 dB and the minimum detectable SNR is 30 dB. The SAR uses a rectangular waveform with a pulse width of 0.05 microseconds. 35. converting the miles to kilometers of our target, we have, RA = 20.45 Km. Using these two figures as rough lower and upper bounds on the Aegis radar range, gives upper and lower range estimates for the LRDR of 7,000 to 12,500 km.” In a missile defense context, such large tracking ranges are not usually obtainable, because at ranges greater than about 4,000 km missile targets on minimum energy trajectories will not rise above the horizon. The maximum non-ambiguous range, which is determined by the … Radar PRF Equation. The radar operates at a frequency of 5.3 GHz and has a peak power of 5 kW. 1 Answer to Consider a radar with a PRF of 5 kHz. Add your answer and earn points. Its maximum range is 200 nmi for the detection of a target with a radar cross section of one square meter ( = 1 m 2 ). What is the maximum range of the radar? What will be the apparent range of the target in kilometers? The practical implication of this is that one must greatly increase the output power to get a modest increase in performance. Hills & rise in ground levels further restrict maximum range to less than 250 nautical miles / 450 km. https://www.britannica.com/technology/radar/Doppler-weather-radar ANSWER: L band (29) On which factor the maximum range of radar depends? This example shows how to compute the required peak transmit power of a 10 GHz, bistatic X-band radar for a 80 km total bistatic range, and 10 dB received SNR. If you solve for the range, you get an equation for the maximum theoretical radar range: Perhaps the most important feature of this equation is the fourth-root dependence. https://www.slideshare.net/atulishereonline/study-of-radar-system-ppt H = height of the beam centerline above sea level in km, or above radar level if H 0 is set to 0. Its antenna is 12 m wide by 4 m high, and the antenna aperture efficiency is a = 0.65. From the Calculation Type drop-down list, choose Peak Transmit Power as the solution type. Also to note, banshee's sonar stimulates the effects of enemy radar, thus with maximum range (overextended, auger reach, stretch, and cunning drift) you can get 98m. If a target is located at a range of 50 miles, how many pulses will the radar have transmitted before the first echo from the target arrives? https://www.physicsgoeasy.com/maximum-range-of-projectile-formula https://www.britannica.com/technology/radar/Atmospheric-effects https://www.blighter.com/products/b400-series-ground-surveillance-radars φ= elevation angle of beam in degrees . What is the maximum unambiguous range Rua of this radar, in km? If it is defined to detect a target with a cross section of 12 sqm and the minimum detectable signal is Pmin = -90dBm. EXAMPLE: Range = 300E03 meter PRF = 500 Hz . 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