| Name: | Arjun Ghosh |
| Affiliation: | University of Calcutta |
| Conference ID : | ASI2023_72 |
| Title : | Passive Mode Operation of CU-ST Radar for Sun Tracking |
| Authors : | Arjun Ghosh,
Abhirup Datta,
Narendra Nath Patra,
Ashik Paul |
| Mode of Presentation: | Poster |
| Abstract Category : | Instrumentation and Techniques |
| Abstract : | We know the power of ST Radar which is used in Atmosphere and weather studies. These applications require the antenna to be used in active mode, where it illuminates the target with its own power source. The huge power beamed per cycle comes at the cost of high costs being incurred. There is another way to exploit these facilities: using them in passive mode. Where we depend on our target’s own radiation or the radiation that target reflects of its surface and falls on the Radar Array Antenna. This way we bypass any need of power emission from the Radar, hence there is huge reduction of operational costs. We worked with the CU-ST Radar at Kalyani, West Bengal. An almost circular 475 Yagi-Uda Antenna Array at 53 MHz with a bandwidth of 3MHz which has a collecting area of 7000 m2.
We performed Sun Tracking experiment in Doppler Beam Swinging Mode twice on 15th and 17th October, 2022. We pointed two beams on the first day and seven beams on the second day. We obtained the incident power on the Antenna as a function of time and a SNR plot which
showed strong signatures of incident power which dominated the Noise and was present for a short span of time during the sun transit across the beams. We have studied the data and our work will present the potential of these Radars in passive mode operation. |
