PRADEEPKUMAR P

Project Manager

Space Physics Lab

Vikram Sarabhai Space Centre

ISRO Post

Trivandrum-695022.

Phone: 0471-2563684 (O), 0471-2590599 (R), 9447074273(M)

Email: p_pradeepkumar[at]vssc[dot]gov[dot]in

pradeepkumarspl[at]gmail[dot]com

Research Area & Research Interests:

Design and development of Scientific Payloads for Planetary and Inter

Planetary missions. Design and development of receiver and transmitter

systems for scientific experiments for atmospheric studies. Design and

development of auto scanning receiving systems for atmospheric Lidars and

Optical Aeronomy experiments. Design and development of Analog and Digital

systems based on Discrete devices, Microcontrollers, FPGAs and DSPs. Design

and implementation of C and LabVIEW based software for data acquisition and

control

Academic Qualification:

BTech in Electronics and Communication Engineering from the College of

Engineering Trivandrum (CET).

Professional Summary:

Joined the Space Physics Laboratory of Vikram Sarabhai Space

Centre, Trivandrum in 1987.

Presently Project Manager (Onboard System), responsible for the

design and development of Onboard hardware and software of the

payloads for Indian Mars Orbiter Mission and Chandrayaan-2

mission.

Engineer-in-charge of instrumentation for Optical Aeronomy

experiments and Atmospheric chemistry experiments.

Responsible for the Design and development of scientific payloads

and subsystems for ground based and rocket-based instruments for

atmospheric studies.

Professional Responsibilities

Project Manager, Onboard System for RAMBHA payload on Chandrayaan-2 Lander.

Project Manager, Onboard System for CHACE-2 payload on Chandrayaan-2.

Member–Secretary, Test& Evaluation and Qualification Team (TEQT-RAMBHA).

Member–Secretary, CHACE-2 Test& Evaluation and Qualification Team (CTEQT-CHACE-2).

Project Manager, Onboard System for MENCA payload on Mars Orbiter Mission.

Convener, Payload Configuration and On-board Electronics, sub-committee 1 of Payload Realization and Execution team (PRET), MENCA for review of OSMOT.

Team member, New Radar developments team for the development of Frequency agile radar, Cloud radar, LST radar and Incoherent backscatter radar of SPL.

Team member, Gas Chromatography experiments team for the setting up of Gas Chromatography based experiment systems of SPL.

Technical support SPL Internet Website Development: Responsible for and Site administration for SPL internet website development.

Nodal person for SPL software library and Intranet/Internet facilities along with Mr. S.V. Mohankumar, Head, ATD, SPL.

Convener for the Zero Level Committee for the work contract approval.

Patent:

First patent from Space Physics Lab: A patent application

(NO:1216/CHE/2009 dt. 26-05-09) on the development of a “Sun tracking

Radiometer” filed is accepted by the Indian patent office.

Experience and Accomplishments:

June 1986–June 1987. Vikram Sarabhai Space Centre, Trivandrum, Kerala, as Apprentice Trainee.

Designed and developed Intercom system with Master plus 5 channels for the Acoustic test facility, for easy communication between the remote test facility and the control centre.

Designed and developed multi-channel data acquisition system for acoustic test facility.

Participated in structural and pressure testing of various rocket motor cases.

July 1987–December 1987 HCL Ltd., Coimbatore, Tamilnadu, as Customer Engineer of Computers Division and Engineer in Charge of

Communications Division

Came first in the seminar conducted at the end of the two month induction training, among the new recruits which included several IIT graduates.

Technically convinced the Telecom authorities, who were not giving sanction to deploy HCL EPABX system, as it failed twice (before my joining) to meet the required specifications, that the system is perfect and the test procedure is the culprit. With this HCL ltd was able to deploy their EPABX systems in their customer premises in Coimbatore after a year of setbacks and customer unrest.

Satisfied all the HCL computer customers (major Textile exporters of South India) of Thirupur area, who were not so earlier.

December 1987–continuing till now Vikram Sarabhai Space Centre, Trivandrum, Kerala.

Technical Assistant

Involved in the development of a Multi element Electronically Steerable Phased Yagi Antenna Array for the HF Doppler radar for the study of ionosphere. (1987-1988)

Developed computer programs for the derivation of true wind at the time of rocket failure from the rocket exhaust plume dynamics, as part of the failure analysis of ASLV D2 rocket. This was a pioneering work in our country. (1988-89)

Incorporated Digital Cassette Tape recorder interface to the Continuous Wave Lidar (CW Lidar) receiver to store data. This has saved several man

hours every day by avoiding manual data entry to computer from printouts.(1990)

Developed a PC based system to retrieve the CW Lidar data stored in digital cassette tapes to PC for analysis and archival. (1990-91)

Developed software for graphically editing the CW Lidar data file, for pre-processing and analysis. This has saved several man hours and made the data pre-processing very user friendly and secure. (1992)

Developed PC based receiver and data acquisition system for the Continuous Wave Lidar system for the study of atmospheric aerosols. This was the first fully PC based data acquisition and receiver system in SPL/VSSC. (1992-93) Scientist/ Engineer

Developed a Multi-Function PC addon card for control and data acquisition of the Multi Wavelength Radiometer (MWR). At present (as on July 2009) the instrument is under operation at 20 major scientific institutions across our country. The network of this instrument will be expanded to 35 stations in the near future. This has saved lots of foreign exchange. This is the first multi-function ISA addon card in-house developed in SPL/VSSC. (1993-94)

Designed and developed a 100MHz photon counting system for the Multi Wavelength Lidar (MWL) using of the shelf components. (1994)

As a member of the project team, involved in the development of the MWL system.(1992-94)

Developed Lunar Radiometer for the study of atmospheric aerosols. (1995) Designed and developed a two axis stepper motor control system for the

control unit of MWR. (1995-96) Designed and developed a control and data acquisition system for the

operation of the MWR on board ship for cruise experiments under ISRO-Geosphere Biosphere Programme (ISRO-GBP). (1998).

Developed a new PC based data acquisition and control system for the CW Lidar receiver, using PCI addon card, for migrating from ISA bus to PCI bus PCs. (1999-2000)

Developed Windows GUI based data acquisition and control software for the CW Lidar receiver system. (2000)

Designed and developed a Prototype system for automatic elevation adjustment and azimuth scanning for the CW Lidar. (2001-02).

Designed and developed a PC based system for the automatic elevation control and azimuth scanning for the CW Lidar telescope. (2003)

Designed and developed a computer based system for multi-channel photon counting and synchronized individually delayed multiple window

generation using a PCI addon card and the software developed in LabView, for the new receiver of the Multi Wavelength Day Glow Photometer, (2003)

Designed and developed a prototype system for the Automatic Sun Tracking Radiometer suitable for moving platforms like ship.(2004)

As part of the development of a Low-cost GPS Sonde, designed and developed a GPS based system to convert the conventional payload of India Meteorological Department in to a GPS sonde. (2004)

A tethered balloon flight of GPS Sonde was conducted successfully and GPS data was transmitted using the Met payload and the same was received, displayed online and stored on a computer, using the RD 65CS receiver and the new electronics developed, without using the conventional radar for tracking the payload.

Designed and developed a USB based external data acquisition system. This is the first USB based in-house development in SPL/VSSC and also may the first in VSSC. (2004)

Designed and developed a GPS based PC time synchronization system for the MWR network stations. (2005)

Designed and developed a USB based PIC microcontroller programmer with Windows GUI interface. (2005)

Developed a standalone testing system for characterizing stepper motors. (2005)

Designed and developed a fully automatic Sun Tracking Multi Wavelength Radiometer suitable for operation on stationary and moving platforms.

Designed and developed a GPS Navigation system for the ship for conducting an Integrated Campaign for Aerosol, Gases and Radiation Budgeting, under ISRO-GBP. (2006)

Established a long distance Dialup networking to collect and store experiment system data to windows network neighbourhood. (2006)

Designed and developed a firmware for the control and data acquisition of the Mass spectrometer payload named Chandra’s Altitudinal Composition Explorer (ChACE) in the Moon Impact Probe (MIP) Onboard Chandrayaan-1 of ISRO. This firmware replaces the proprietary windows software used for the operation the Mass spectrometer in lab. The major challenge for this work was that no programming information was available about the mass spectrometer or its proprietary windows software, to develop the above firmware. The ChACE payload has successfully completed its mission and provided very rich treasure of scientific information on the tenuous lunar environment. This work was highly appreciated by many authorities. (2007-2008)

Development of a system for the PC based operation of the Monochromator for the Optical Aeronomy Laboratory. (2008)

Developed LabVIEW based system for the Concurrent Multi User Remote Data Acquisition and Control over a network using TCP/IP protocol. (2008)

Jointly developed a Standalone controller for the Automatic Sun tracking Radiometer incorporating microcontrollers. (2008)

Jointly developed a microcontroller based system for the Control, Data Acquisition and Telemetry of the Aethalometer for its operation Onboard TIFR balloon, for the study of atmospheric black carbon. (2008)

Development and commissioning of a system for the measurement of the pitch and roll motion of the ship ORV Sagar Kanya on its one month voyage over Bay of Bengal as part of the Integrated Campaign for the Aerosol gases and Radiation Budget Winter campaign (ICARB_W) under ISRO-GBP. (2008-2009)

Jointly developed a microcontroller based standalone system for the Control, Data Acquisition and Telemetry of the Mass Spectrometer payload on the sounding rockets planned for the scientific experiments during the Total Solar Eclipse in January 2010. (2009).

First patent from Space Physics Lab: A joint patent application (NO:1216/CHE/2009 dt. 26-05-09) on the development of a “Sun tracking Radiometer” filed from this Centre was accepted by the Indian patent office (2009).

EACE payloads for the Sooryagrahan 2010: Designed and developed the Onboard controller Hardware and Firmware MSCDAT (Mass Spectrometer Controller for Data Acquisition and Telemetry) for the Data Acquisition and Telemetry of the EACE payload for the Sooryagrahan 2010 sounding rockets. (2009).

Linear Power Regulators (LPR): Designed, developed and qualified 24V and 5V Linear Power Regulators for the EACE payloads (2009).

Ruggedisation of commercial mass spectrometer for EACE payload: As a member of the task team for the realization of the Sooryagrahan payloads, involved in the ruggedisation of the quadruple probe and the Communication and Control Unit (CCU) electronics of the commercial mass spectrometer (2009).

Preparation of EACE payload for the Sooryagrahan 2010 flights from TERLS and SHAR: Carried out the final preparation and testing of five EACE payloads prior to their final integration with RH300-MKII and RH560-MKII sounding rockets (2009).

Successfully flight operated the in-house developed Mass Spectrometer

Controller for Data Acquisition and Telemetry (MSCDAT) of the EACE payload for the Sooryagrahan 2010 rockets from TERLS and SHAR. All the five MSCDATs have flawlessly operated the EACE payload and delivered the mission data to the telemetry (2010).

Mission Operations of the EACE payload from MCC SHAR: Carried out the final testing and mission operation of EACE and ENWi (Electron density and Neutral Wind probe) payloads for two RH560-MKII sounding rockets from Mission Control Centre, SHAR during Sooryagrahan 2010 (2010).

Monochromator Automation System: Designed, developed and successfully commissioned a PC based automation system for the operation of Monochromator to measure Air glow for optical Aeronomy experiments. The system comprises of a multi-function PCI add-on card and external interface & signal conditioning electronics for the control of scanning motor, scanning prism position sensing and Air glow signal photon counting. An in-house developed GUI program controls the complete automation of the Monochromator, depending upon the modes of operation selected by the user. This system has accomplished unattended operation of the Monochromator for long duration experiments (2010).

Peltier cooling system: A Peltier based cooling system without circulating water heat exchanger is developed for cooling narrow band optical filters. This system, developed to replace the existing water circulated Peltier cooling system used in the Airglow Photometer, could achieve ± 0.1 °C stability under ambient fluctuation of. ± 3 °C, for a set temperature of 23 °C (2010).

Data Telemetry in GSM band: A radio communication system working in GSM band is developed using RF PIC microcontroller modules, for data telemetry of field experiments (2010).

Onboard Electronics Hardware system for MENCA payload for Mars 2013 Mission: Completed the conceptual design of the Onboard controller hardware OSMOT (Onboard System for MENCA Operation and Telemetry), based on a space qualified Digital Signal Processor (DSP). The OSMOT realizes independent operation of MENCA payload as well as Telemetry & Tele-command Processing. This system incorporates a DSP, Mil-Std-1553 Controller, RAM, PROM, EEPROM and RS232 as the major devices for the Onboard control of the payload. This design supports the Tele-command based operation of the MENCA payload to meet various mission requirements (2011).

Designed and realized the Engineering Model and Qualification Model of the Onboard controller hardware OSMOT, based on a space qualified

Digital Signal Processor (DSP). This work has been taken up from scratch and realized in 6 months’ time to qualify the MENCA for flying in the Mars Orbiter Mission (MOM) of ISRO. The design had to be carried out against the major constraints viz. Usage of only available space qualified components, Low power, Light weight, PCB with restricted size and layout of free holes and mounting holes, etc. All components except the DSP and the RS232 transceiver were sourced from ISAC’s Preferred Parts List. The DSP and the RS232 transceivers were procured on fast-track mode. As maximum autonomy was required for the MOM payloads, the OSMOT was designed to realize independent operation of MENCA payload, with respect to the processing of science data, Telemetry data & Tele-command data. The space qualified DSP is central decision making unit of the of the OSMOT card which also incorporates two PROMs, EEPROM, LVDS, level translator and RS232 transceivers, as the major devices required for the Onboard control of the payload. This design supports the Tele-command based operation of the MENCA payload to meet various mission requirements (2012).

Onboard firmware for EM and QM of MENCA payload: The design and development of EM version of firmware for the onboard operation of the MENCA payload is completed. The overall control strategy of the Mass spectrometer probe is similar to that of CHACE payload in MIP Onboard Chandrayaan-I mission. The new requirements of multi-mode operation, long term data storage, telemetry, Tele-command based payload operation and reprogramming of the onboard parameters are the major differences which demands complex firmware strategies. This firmware was successfully loaded in the OSMOT card and it was successfully tested, and it was also used to demonstrate the operation of the EM version of MENCA for qualifying it. This firmware also demonstrated the Telecommand based operation of OSMOT card (2012).

Development Flight Model Hardware of Onboard System for MENCA Operation and Telecommand (OSMOT). The FM version of OSMOT card was realized, tested, integrated with MENCA payload and successfully performed all functional tests during T&E, Spacecraft Integrated level tests and Spacecraft Integrated level Thermovac, fully satisfying the norms for the MOM mission (2013).

Development Flight Model Software of OSMOT. The design of FM version of firmware for the onboard operation of the MENCA payload was completed, reviewed and cleared for flight. The overall control strategy of the Mass spectrometer probe is similar to that of CHACE payload in MIP

onboard Chandrayaan-I mission. The new requirements of multi-mode operation, long term data storage, telemetry, Tele-command based payload operation and reprogramming of the onboard parameters are the major differences which demands complex firmware strategies. Conducted and completed the review of flight firmware code for OSMOT, based on the software design. The flight version of firmware code thus reviewed was loaded in the OSMOT card and it was successfully tested during all T&E. This firmware also demonstrated the Telecommand based operation of OSMOT card during the actual flight of MOM (2013).

Successful commissioning of MENCA payload onboard MOM using OSMOT. The OSMOT card has flawlessly performed all its functions during the inflight commissioning operation of MENCA payload in MOM mission by issuing various Telecommands from Mission Operations Centre. MENCA payload was successfully operated in orbit for one hour on first switch ON and collected good quality data. The MENCA payload is perfectly commissioned for regular operation by Telecommands using the OSMOT (2013).

Development of Data Acquisition and Control System for Portable Night-time Photometer. The Portable Night-time Photometer (PNP) is an in-house developed compact multi-filter optical instrument, which is used for making terrestrial airglow intensity measurements during night time. The PNP is capable of making measurements on five different wavelengths centred at 557.5, 589, 630, 777.4 and 840 nm nearly simultaneously. The development of the USB based GUI data acquisition and control system for the PNP is completed under my active guidance and support (2013).

Development of Control and online plotting System for Automatic Weather station. The automatic weather station data was stored on to a built-in memory card module and the data need to be manually transferred to PC on a regular basis by attaching the memory card module to PC, through a dedicated memory module reader. This newly developed system controls the weather station and directly acquires the data from the built-in memory card and transfers it to PC without the need for the removal of the memory module. It also supports online weather plot and automated daily archival of data. This work is completed under my active guidance and support (2013).

Design and development of a RS232 to RS422 converter for Sonic Anemometer under the NOBLE project. For the acquisition of data from the Sonic anemometer in field, using a remote PC situated in lab, a RS232 to RS422 converter & cable system is developed. This work also is

successfully completed under my guidance and (2013). Onboard Controller Electronics Hardware and Firmware system for

CHACE-2 payload for Chandrayaan 2 project: Completed the preliminary system design for the Onboard System for CHACE Operation and Telemetry (OSCOT). OSCOT comprising of a processor implemented inside a space qualified FPGA is designed for the independent operation of CHACE payload. It supports four major independent and simultaneous functions to handle and process Telemetry & Tele-command, the control & data acquisition for science data and the process and transfer of science data to the spacecraft. Unlike OSMOT the OSCOT has an additional functionality to support Telecommand based onboard program reloading from ground. The software strategy for the above functionality is worked out to implement in FPGA (2014).

Lectures / Invited Lectures Delivered: 1. WSW lectures: As part of the world space week celebration, gave a series of

lecture at one college, one school and one public library in Kozhikode district during 6 to 10 October 2009.

2. Invited lecture: A special lecture was given at Indian Institute of Management, Kozhikode on the occasion of the "Horizons 2009”, the Annual Management Conclave of IIM-K on 9th October 2009.

3. Invited lecture: A special lecture was given at National Institute of Technology, Calicut on the occasion of the “TATHVA 09” the mega techno-management event of NIT-C on 25th October 2009.

4. WSW lectures: As part of the world space week celebration, gave a series of lecture at 12 schools in Kozhikode district, covering about 4000 students and teachers, during 5 th to 7 th October 2010.

5. As a resource person of World Space Week 2013 celebration, gave lecture on the topic “Exploring Mars, Discovering Earth” at GOVT. MODEL HSS FOR GIRLS, PATTOM.

6. Session chair: Chaired the two day session of the National Technical seminar

“Colloquium 2014” conducted on 13-14 February, 2014, by Mohandas

College of Engineering, Trivandrum, for the UG and PG students of Electrical

Engineering and Electronics Engineering streams of various engineering

colleges.

7. MTech Thesis external evaluation: As external expert, evaluated the MTech thesis preliminary presentation in accordance with the partial fulfilment of the requirements of the M-Tech Degree in Applied Electronics &

Instrumentation Engineering of the University of Kerala, (2008 scheme) held on 3-4 March 2014, at the Mohandas College of Engineering, Trivandrum.

8. Invited lecture: A special lecture was given at Christian College Chengannur on the occasion of the National Seminar “Advances in Geophysical, Space and Atmospheric Research (AGSAR)”, on 15th March 2014.

9. Invited lecture: A special lecture was given at the Narippatta UPS, Kallachi, Kozhikode on the occasion of the “ASPIRE” science club program and interaction with the students on 21March 2014.

Research Supervision

1. Project work guidance: Guided 11 MTech students and 77 BTech students

for their successful completion final year project work.

Papers and Symposium Presentations:

1. Satyanarayana, M., D. Rama Krishna Rao, S.V. Mohankumar, Presennakumar, G.P. Sasidharan Nair, P. Sreelatha, P. Pradeepkumar, M. Kathirvel, `A Multiwavelength Lidar for atmospheric studies', Nat. Space Sci. Symp., 252©253, 1994

2. Satyanarayana,M., D.Ramakrishna Rao, S.V.Mohankumar, B.Presennakumar, P.Sreelatha, P. Pradeepkumar and K. Venkata Dhananjaya, Differential absorption lidar and its applications in environmental studies, accepted for presentation in National Laser Symposium, January 1996 at BARC, Bombay.

3. Ashokkumar Y. R. V. Ramanan, M. Mohan, B. Sunder, Abraham Varghese, R.

Bagavathiappan, S. Aravamuthan, A. K. Abdul Samad, K. Ramaswamy, Deepa

Muraleedharan, Priya Haridasan, G. Sajitha, Padma, Sherly Joy, M. J. Lal, K. K.

Mukundan, G. SunilKumar, S. R. Biju, B. S. SureshKumar, Rajendran, V.

Murugesan, Reshmi, S. Chatterjee, M. Manohar, G. Murali, S. Raghavendran,

M. Kalavathi, A. S. Kiran Kumar, Saji. A. Kuriakose, Sandeep Paul, Anurag

Verma, R. Sridharan, S. M. Ahmed, P. Sreelatha, T. P. Das, P. Pradeep Kumar,

G. Supriya, Neha Naik., “The Moon Impact Probe on Chandrayaan-I”, Current

Science 96, No.4, 25, 2009, pp 540-543.

4. R Sridharan, S M Ahmed, Tirtha Pratim Das, P Sreelatha, P Pradeepkumar, Neha Naik, Gokulapati Supriya and A. Bhardwaj, “Dayside lunar atmosphere unfolded: Results from Chandra’s Altitudinal Composition Explorer Chandrayaan-1”, NSSS-2010, Rajkot, India.

5. Tirtha Pratim Das, R Sridharan, S M Ahmed, P Sreelatha, P Pradeepkumar, Neha Naik, Gokulapati Supriya, “CHACE: In search of the lunar atmosphere”, NWASS 23-24 November, 2010.

6. R. Sridharan, S.M.Ahmed, TirthaPratimDas, P.Sreelatha, P.Pradeepkumar, Neha Naik, Gogulapati Supriya, ‘Direct’ evidence for water (H2O) in the sun lit lunar ambience from CHACE on MIP of Chandrayaan I. Planet. Space Sci.(2010),doi:10.1016/j.pss.2010.02.013.

7. R. Sridharan, S.M.Ahmed, TirthaPratimDas, P.Sreelatha, P.Pradeepkumar, Neha Naik, Gogulapati Supriya, The sunlit lunar atmosphere: A comprehensive study by CHACE on the Moon Impact Probe of Chandrayaan-1. Planet. Space Sci. (2010), doi:10.1016/j.pss.2010.07.027.

8. Manju G., Sreelatha P., Sudha Ravindran, Rosmy John, Neha Naik, Satheesh Thampi, Pradeepkumar P, S. V. Mohan Kumar and R. Sridharan, A new Ionospheric Probe for insitu measurements of neutral wind and electron density, AOGS, July 2010, Hyderabad, India.

9. Manju G., Sreelatha P., Sudha Ravindran, Rosmy John, Neha Naik, Pradeepkumar P, S. V. Mohan Kumar and R. Sridharan, Electron density and Neutral wind probe (ENWi) insitu measurements during solar eclipse campaign of 14-15, Januarty 2010 – Preliminary results, NSSS- February 2010, Rajkot, India.

10. "Embedded Controller Unit for Earth’s Atmospheric Composition Explorer (EACE) payload onboard rockets flown during Sooryagrahan 2010 campaign", Pradeepkumar P, Dinakar Prasad Vajja, Anumod P G, Sreelatha P, Neha Naik, Tirtha Pratim Das, Supriya G and Mohankumar S V; National Workshop: Results on Solar Eclipse, NaWRoSE-2011, pp 87-89.

11. “Development of Electron density and Neutral Wind (ENWi) probe payload during Sooryagrahan 2010”, P. Sreelatha, Rosmy John, Manju G, Neha Naik, Pradeepkumar P, Mohankumar S V & R Sridharan, NaWRoSE – 2011, pp 84-86.

12. “Prabhav’ – The checkout software for EACE payload data conversion and plotting”, Neha Naik, Sreelatha P., Pradeepkumar P., Dinakar Prasad Vajja, Anumod P.G, Rosmy John and S. V. Mohankumar, ‘, NaWRoSE – 2011, pp 90-92.

13. “In-situ Electron density and Neutral Wind (ENWi) measurements in the near earth space – Results from the solar eclipse campaign 2010”,R. Sridharan, G.Manju, P.Sreelatha, Sudha Ravindran, Neha Naik, P.Pradeep Kumar, Satish Thampi, Tarun K Pant, Madhav Haridas, M. Mridula and Lijo Jose, NaWRoSE – 2011, pp 41-43.

14. “Accurate Estimation of the Total Pressure using a Mass Spectrometer below the X-ray limit” , Tirtha Pratim Das , Prasanna Mahavarkar, Gogulapati Supriya, Satheesh Thampi, P. Sreelatha, P. Pradeepkumar, Neha Naik, S V Mohankumar and Anil Bhardwaj ; Proc. International Conference on Innovative Science and Engineering Technology (ICISET 2011), ISBN 978-81-906377-5-6, Vol 1 , page 76, 2011.

15. “Study on the Water Vapor Desorption Rate from Space-Borne Mass Spectrometers under Simulated Deep Space Vacuum”, Tirtha Pratim Das, Gogulapati Supriya, Prasanna Mahavarkar, Neha Naik, P. Sreelatha, P. Pradeepkumar, S V Mohankumar, Anil Bhardwaj and R. Sridharan; ”; Proc. International Conference on Innovative Science and Engineering Technology (ICISET 2011), ISBN 978-81-906377-5-6, Vol 1 , page 430, 2011.

16. "Study of the Lunar Exosphere with the CHACE-2 experiment aboard the Chandrayaan-2", Anil Bhardwaj and the CHACE-2 team; Proc. PLANEX Decadal Conference (International), December, 2011.

17. "Exploration of Martian Upper Atmosphere-Exosphere", Anil Bhardwaj, S. V. Mohankumar, P. Sreelatha, P. Pradeepkumar, Tirtha P. Das, Neha Naik, G. Supriya, B. Sunder, Amarnath Nandi, Vipin K. Yadav, M.B. Dhanya, R.Satheesh Thampi, G. P. Padmanabhan, N. Raghu, and A.V. Aliyas; Proc. PLANEX Decadal Conference (International), December, 2011.

18. Anil Bhardwaj, S.V. Mohankumar, P. Sreelatha, P. Pradeepkumar, B. Sunder, T.P. Das, Amarnath Nandi, Neha Naik, G. Supriya, R. Satheesh Thampi, A.V. Aliyas, G.P. Padmanabhan, Vipin K. Yadav and M.B. Dhanya, N. Raghu, “CHACE-2 Experiment Aboard the Chandrayaan-2: exploration of lunar exosphere”, 17th National Space Science Symposium (NSSS 2012), February 14–17, 2012, S.V. University, Tirupati, Andhra Pradesh.

19. Anil Bhardwaj, S.V. Mohankumar, P. Sreelatha, P. Pradeepkumar, T.P. Das, Neha Naik, G. Supriya, B. Sunder, Amarnath Nandi, Vipin K. Yadav, M.B. Dhanya, R. Satheesh Thampi, G.P. Padmanabhan, N. Raghu and A.V. Aliyas, “Studying the Mars Exosphere with the MENCA Experiment on the Mars Orbiter”, NSSS 2012.

20. Tirtha Pratim Das, Gogulapati Supriya, Prasanna Mahavarkar, Neha Naik, P. Pradeepkumar, P. Sreelatha, S. V. Mohankumar, Anil Bhardwaj and R. Sridharan, “Study on the desorption rate of the water vapour adsorbed in space payloads in deep space environment”, NSSS 2012.

21. "A Novel probe for in-situ Electron density and Neutral Wind (ENWi) measurements in the near Earth space", G. Manju, R. Sridharan, P. Sreelatha, Sudha Ravindran, M.K. Madhav Haridas, Tarun K. Pant, P. Pradeepkumar, R. Satheesh Thampi, Neha Naik, N. Mridula, Lijo Jose, S.G. Sumod; Journal of Atmospheric and Solar-Terrestrial Physics 74 (2012) 81–86.

22. Miziya K, K. G. Gopchandran, P. Pradeepkumar, C.Vineeth, T.K.Panth and Anumod P. G. ”Automation of the Gate Scanning Mechanism of the Multi-Wavelength Dayglow Photometer Using LabVIEW” Proceedings of the Fourth IEEE International Conference on Computing, Communication and Networking Technologies, July 4-6, 2013 session 22, page 36-43.

23. Miziya K, K. G. Gopchandran, P. Pradeepkumar, C.Vineeth, T.K.Panth and Anumod P. G. ”Design and Implementation of Data Acquisition and Control System for Multi-Wavelength Dayglow Photometer” Proceedings of the Fourth IEEE International Conference on Computing, Communication and Networking Technologies, July 4-6, 2013 session 13, page 7-13.

24. Sreelatha P, P Pradeepkumar & S V Mohankumar, ”A LabVIEW based extended (10,5) binary hamming code generator for telecommanding applications”, International Journal of Soft Computing and Engineering (IJSCE), Vol4 (2), pp. 70-73, 2014.