Implementation of Radar Digital Receiver based on Xeon-Processor using Intel IPP

Auto-search is one of the key steps in digital signal processing for Loran-C receivers, however, for digital sampling Loran-C signal, the principle search algorithm is unable to realize signal search veraciously because of the asynchronism between sampling clock and transmitting station clock. For this question, an auto-search algorithm based on subsection correlation for Loran-C is presented after analyzing the principle search algorithm. The experiment results show that for the received digital Loran-C signal, there are several correlation and accumulation values of master and secondary stations to exceed the search thresholds; the maximum correlation and accumulation value of the presented algorithm is far higher than that of the principle algorithm. That is to say, the presented algorithm can search the arrival time of master and secondary station successfully, solve the problem of clock asynchronism effectively, and enhance the search sensitivity of the receiver, which have great significance for digital processing of Loran-C signal and the engineering realization of Loran-C digital receiver.

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Calibration of Mst Radar Using Radio Source Virgo-A With Digital Receiver

IOSR Journal of Electronics and Communication Engineering ◽

10.9790/2834-09445861 ◽

2014 ◽

Vol 9 (4) ◽

pp. 58-61

Author(s):

T. Nirmala ◽

◽

Prof. P. Satyanarayana ◽

T. Rajendra Prasad

Keyword(s):

Radio Source ◽

Digital Receiver ◽

Mst Radar

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Results of work of new spectropolarimeter for solar radio emission observations in the range 50–500 MHz

Solnechno-Zemnaya Fizika ◽

10.12737/szf-53201901 ◽

2019 ◽

Vol 5 (3) ◽

pp. 3-10

Author(s):

Наталия Муратова ◽

Nataliia Muratova ◽

Анатолий Муратов ◽

Anatoliy Muratov ◽

Лариса Кашапова ◽

...

Keyword(s):

Radio Emission ◽

Solar Radio ◽

Block Diagram ◽

Stokes Parameters ◽

Solar Radio Emission ◽

Digital Receiver ◽

Stokes Vector ◽

Digital Radio ◽

Solar Observations ◽

Channel Bandwidth

Ground-based observations within meter radio range are of importance for understanding processes occurring in the solar corona. We present concepts, block diagram, and results of first observations of the Solar Spectropolarimeter of Meter Range (SSMD), launched for solar observations in the range 50–500 MHz in April 2016. The main purpose of this work was to develop an up-to-date digital radio spectropolarimeter able to record the full Stokes vector for sporadic solar phenomena taking place in the 50–500 MHz range. We use a crossed log periodic antenna to detect solar radio emission. This antenna can simultaneously obtain horizontal and vertical polarization components. The main part of SSMD is a digital receiver based on an FX correlator architecture. We use the Fast Fourier Transform (FFT) algorithm based on the real-time pipeline circuit to construct amplitude dynamic spectra (intensity vs frequency and time). SSMD has 4608 frequency channels with 97.66 kHz channel bandwidth and 97.66 kHz spacing. Time resolution is 1 s. The spectropolarimeter has a 50–500 MHz range. It can record the full Stokes vector. At present, SSMD observes two of four parameters in regular mode (I and V). We have observational data since 2016. The catalog development is in progress. We plan to improve time and frequency characteristics, record all Stokes parameters, and conduct a calibration. We are working on providing access to the data archive via the Internet.

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MULTIFUNCTIONAL DIGITAL RECEIVER-SPECTROMETER

Radio physics and radio astronomy ◽

10.15407/rpra19.03.276 ◽

2014 ◽

Vol 19 (3) ◽

pp. 276-289 ◽

Cited By ~ 8

Author(s):

O. Y. Vasilyev ◽

◽

A. I. Kuzin ◽

A. A. Kravtsov ◽

E. V. Bulakh ◽

...

Keyword(s):

Digital Receiver

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