Dynamically tuneable pre‐modulation filter for an airborne PCM/FM telemetry system
Abstract In the conventional airborne telemetry system, the pre‐modulation filter with a multi‐pole active Bessel filter is preferred to use in Pulse Code Modulator (PCM)/FM transmission. In the existing system, it is not possible to change the cut‐off frequency for different data rates dynamically...
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| Format: | Article |
| Language: | English |
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Wiley
2021-10-01
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| Series: | IET Circuits, Devices and Systems |
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| Online Access: | https://doi.org/10.1049/cds2.12055 |
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| author | Sudarsana Reddy Karnati Lakshmi Bopanna Dhanunjay R Jahagirdar |
| author_facet | Sudarsana Reddy Karnati Lakshmi Bopanna Dhanunjay R Jahagirdar |
| author_sort | Sudarsana Reddy Karnati |
| collection | DOAJ |
| description | Abstract In the conventional airborne telemetry system, the pre‐modulation filter with a multi‐pole active Bessel filter is preferred to use in Pulse Code Modulator (PCM)/FM transmission. In the existing system, it is not possible to change the cut‐off frequency for different data rates dynamically as required in the launch scenario of a long‐range aerospace vehicle. In general, aerospace vehicle has multiple propellant stages to travel a desired trajectory path. Each stage gets separated from the vehicle at different instances. Each stage measurement plan is defined and correspondingly the PCM format is generated with an optimum data rate. Hence, the telemetry system is required to transmit variable data rates at various instances of a long‐range aerospace vehicle from launch point to end point of a vehicle. This can be addressed by designing a dynamically tuneable pre‐modulation (DTPM) filter. Here, a suitable DTPM filter scheme is proposed to mitigate variable data rate transmission in the telemetry system. The scheme is analysed as per IRIG‐106 standard and simulated using MATLAB. The same has been modelled using VHDL and implemented targeting 28 nm technology Xilinx Zynq FPGA device. |
| format | Article |
| id | doaj-art-ec4602f4af854cd2acc5fa1ce005d487 |
| institution | OA Journals |
| issn | 1751-858X 1751-8598 |
| language | English |
| publishDate | 2021-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Circuits, Devices and Systems |
| spelling | doaj-art-ec4602f4af854cd2acc5fa1ce005d4872025-08-20T02:21:48ZengWileyIET Circuits, Devices and Systems1751-858X1751-85982021-10-0115760260910.1049/cds2.12055Dynamically tuneable pre‐modulation filter for an airborne PCM/FM telemetry systemSudarsana Reddy Karnati0Lakshmi Bopanna1Dhanunjay R Jahagirdar2Research Centre Imarat Directorate of Flight Instrumentation Vignyanakancha Hyderabad Telangana IndiaDepartment of Electronics and Communication Engineering National Institute of Technology Warangal Telangana IndiaResearch Centre Imarat Directorate of RF Seekers Vignyanakancha Hyderabad Telangana IndiaAbstract In the conventional airborne telemetry system, the pre‐modulation filter with a multi‐pole active Bessel filter is preferred to use in Pulse Code Modulator (PCM)/FM transmission. In the existing system, it is not possible to change the cut‐off frequency for different data rates dynamically as required in the launch scenario of a long‐range aerospace vehicle. In general, aerospace vehicle has multiple propellant stages to travel a desired trajectory path. Each stage gets separated from the vehicle at different instances. Each stage measurement plan is defined and correspondingly the PCM format is generated with an optimum data rate. Hence, the telemetry system is required to transmit variable data rates at various instances of a long‐range aerospace vehicle from launch point to end point of a vehicle. This can be addressed by designing a dynamically tuneable pre‐modulation (DTPM) filter. Here, a suitable DTPM filter scheme is proposed to mitigate variable data rate transmission in the telemetry system. The scheme is analysed as per IRIG‐106 standard and simulated using MATLAB. The same has been modelled using VHDL and implemented targeting 28 nm technology Xilinx Zynq FPGA device.https://doi.org/10.1049/cds2.12055aircraft communicationdata recordingfield programmable gate arrayshardware description languagespulse code modulationradiotelemetry |
| spellingShingle | Sudarsana Reddy Karnati Lakshmi Bopanna Dhanunjay R Jahagirdar Dynamically tuneable pre‐modulation filter for an airborne PCM/FM telemetry system IET Circuits, Devices and Systems aircraft communication data recording field programmable gate arrays hardware description languages pulse code modulation radiotelemetry |
| title | Dynamically tuneable pre‐modulation filter for an airborne PCM/FM telemetry system |
| title_full | Dynamically tuneable pre‐modulation filter for an airborne PCM/FM telemetry system |
| title_fullStr | Dynamically tuneable pre‐modulation filter for an airborne PCM/FM telemetry system |
| title_full_unstemmed | Dynamically tuneable pre‐modulation filter for an airborne PCM/FM telemetry system |
| title_short | Dynamically tuneable pre‐modulation filter for an airborne PCM/FM telemetry system |
| title_sort | dynamically tuneable pre modulation filter for an airborne pcm fm telemetry system |
| topic | aircraft communication data recording field programmable gate arrays hardware description languages pulse code modulation radiotelemetry |
| url | https://doi.org/10.1049/cds2.12055 |
| work_keys_str_mv | AT sudarsanareddykarnati dynamicallytuneablepremodulationfilterforanairbornepcmfmtelemetrysystem AT lakshmibopanna dynamicallytuneablepremodulationfilterforanairbornepcmfmtelemetrysystem AT dhanunjayrjahagirdar dynamicallytuneablepremodulationfilterforanairbornepcmfmtelemetrysystem |