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    Candidate Profile
     Date Submitted:01-08-2011
     Last Modified:01-08-2011 (06:57)
    Job information
     Current job:System Engineer / Manager
     Employment Term:Permanent
     Job location:Anywhere
     Date available:
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Satellite Operators, ,
     KeywordsAIT, Telecommunication, mission analysis, system engineering, RF and microwave

    Born: 1977

    Nationality: Malaysia

    Gender: Male

    Marital Status : Married (two children)




    2010 – Present   Masters (Research) Universiti Kebangsaan Malaysia

                              Radio Frequency / Telecommunication

    1997- 1999        Bachelor Electrical Eng, Vanderbilt Univerity, Nasville,  USA    

                               (Electronics engineering / minor mathematics)

    1995 – 1997       American Associate Degree ,MARA Community Science College

                                Electrical Engineering

    1993 – 1994       Sijil Pelajaran Malaysia, MRSM Taiping, Perak.            

                                   MARA Special Education Programme




    I am customer focused, reliable technical manager / system engineer who has had experience in all aspect of satellite development and high reliability system, project management and telecommunication systems. I have been involved in preparing proposal, technical design, implementation, development, manufacturing, testing, installation, integration, and operational support. I am a certified professional engineer (Board of Engineers Malaysia) and corporate member of Institute of Engineers Malaysia (IEM).


    Professional Experience:


    2010 –Present: Technical Manger-Space System (Astronautic Technology Sdn Bhd – ATSB)


    Background: ATSB has been commissioned to design, develop, manufacture, launch, commission and operate satellite program and related services for the government of Malaysia.


    X-band Transmission System:

    Background: The project is for the TechnoFund Grant awarded by the Ministry of Science, Technology, and Innovation (MOSTI) Grant no: TF1208E164

    Responsibilities include: System design and analysis using Advance Design System Software to identify the right architecture for high data satellite X-band (8 GHz) transmitter for low earth orbit satellite. The hardware is developed by integration of RF components and tested the performance and comparison on bench level.  Achieve end to end simulations and the transmitter prototype successfully tested in lab environment.


    Project Management Office:

    Responsibilities include: Appointed as the head of project management office to stream line project activities mainly space project activities. Prepare project reporting template which is used by the project managers for reporting. Develop project management document template for use in the project in the company. The project management template is used by the Quality Assurance Manager to achieve ISO 9001:2008 for the company software development. Currently the company is aiming to achieve full ISO9001:2008 for satellite design and development using the available template.


    Additional responsibilities are preparing bid and proposals for future remote sensing satellite RazakSAT-2 for the government of Malaysia which include participation in user workshop, technical support to the space agency and remote sensing agency coordination and development of mission analysis for possible satellite specification.


    National Communication Satellite Programme:

    Background: The project is to perform feasibility studies and mission studies for a national satellite programme to serve the government needs.


    Responsibilities include: To support the frequency filing initiative and also the MCMC national preparatory Working Group. Support MCMC for the World Radio Conference 2012 meetings particularly is Satellite Related Issues. Identify the correct orbital slots and understanding the process of frequency filing and registration. Support the technical team in identifying user requirement by performing survey and participate in the design reviews.


    Additional activities:

    ·         Appointed as invited lectrurer for UiTM satellite telecommunication subsystem design course for 2011 1st semester.

    ·         Appointed as MOSTI science fund and technofund committee 2010 - 2011.

    ·         Appointed as committee member for National Defence and Research Committee 2011



    2009 – 2010: Project Manager RazakSAT Phase 2 (– ATSB)


    Background: RazakSAT is a remote sensing satellite operating in low earth orbit which is design, develop, manufacture, launch and operate by ATSB.


    In-Orbit Satellite Operations:

    Responsibilities include:  Technical point of contact to address the issues identified during satellite operations by the customer (i.e. government of Malaysia). Proposed and discussed technical solutions with customer and provide customer feedback to the satellite operation team for implementation of request by the customer. Discussed and plan mitigation of satellite anomalies during operations. Experiments different gain and configurations to identify the best parameters for the users. Prepare reports and presentation to the National Space Agencies, Remote Sensing Agency, and Ministry of Science and Technology. All the major issues are resolved except one anomaly which causes the satellite to lose attitude control due to OBC platform damage.


    Launch Campaign:

    Responsibilities include: Prepare test plans and procedures, shipment items, tools and equipments for satellite testing at launch site. Discuss with the launch vehicle contractor on daily basis to achieve smooth operations and on schedule launch according to the given launch windows. Ensure RF radiation from the satellite does not interfere with the launch vehicle avionics. Performed the satellite functional test for all subsystems and ensure satellite is in good condition before handover to the launch vehicle contractor. Additional tasks given after completion of technical activities are to ensure the launch event attended by VVIPs is successful. Technical Point of contacts between the launch team, ground station team to the stakeholders. Key achievements are satellite functional test are completed on schedule and the RazakSAT satellite is integrated with the launch vehicle and handed over to the launch vehicle contractor.


    Pre-launch activities:

    Responsibilities include: Ensuring the satellite are in good condition which means all items are tested and anomalies identified are remove. Discussed and prepare ground station operational support to the existing ground station in terms of tracking the satellite immediately after launch. The coordination and preparation of all the teams involved such as in-flight calibration activities, ground station readiness, launch and early operations procedures are in place and launch vehicle readiness. Manage and conduct operation readiness review involving the customers, satellite users, operations team, launch service providers and operations consultants. I was appointed as project manager to ensure smooth planning and coordinated activity to ensure successful orbital insertion of the satellite after the current project manager was promoted to the space agencies. I have to track, manage, and coordinate between project sponsors and customers. Obtain a go ahead from everyone including stakeholders, and contractors for the launch and operation of satellite.


    Additional Info:

    ·         Prepare proposals for the X-band Transmission System, a TechnoFund Grant from MOSTI.

    ·         Support the national communication satellite project in frequency filing activities and supporting the Malaysian Communication and Multimedia Commission (MCMC) in the work to prepare for the World Radio Conference in 2012.

    ·         Organized training for the engineers in the company, provide training on telecommunications subsystems and preparing training material for internal and external participants.

    ·         Presented in International Aerospace Conference 2009 on the subject of satellite launch.

    ·         Support the development and testing of the transmitter and antenna pattern test of ATSB’s pico satellite project. Work with collaboration with UTM and UiTM in antenna pattern test.

    ·         Preparation of MoUs, proposals and support of corporate activities.

    ·         Appointed as Industrial Advisors for International Islamic University of Malaysia, Gombak.


    2005–2009: System Engineer (Astronautic Technology Sdn Bhd – ATSB)


    Satellite and Ground Station Compatibility Test

    Responsibilities include: To design the link test for satellite S-band communication and X-band frequencies, writing up the test procedures and develop the satellite test jigs to provide correct line of sight with the ground station antenna test. The work requires coordination with the national space agency ground station engineers, mechanical engineers and interface of the satellite from inside the clean room to the antenna outside the clean room. The achievement of the test includes fine tuning of the ground station parameters to the actual operations of the antenna parameters. Satellite operational scenario are also manage to be performed in real time with the satellite to ensure the operations are according to the designed.


    Pre-flight Calibration

    Responsibilities include: To provide product assurance by making sure all the processes and procedures are met during the pre-flight calibration due to risky operations involved in handling the satellite. The performance of the data transmission system from the optical payload and receive signal quality has to be ensured to be in good condition to remove uncertainties in the measurement results. The pre-flight calibration is successful in one try and the data collected was able to be used for correction in the flight activities. 


    National Astronaut (Angkasawan) Programme

    Responsibilities include: To support the team to ensure successful launch of the Malaysian Astronauts and also successful launch of the experimental items. Provide logistics support for the Malaysian delegates for atmosphere re-entry of the Malaysian astronaut. I also prepare training materials and exam questions for evaluating the last four candidates’ knowledge in space technology and science for the National Space Agencies.


    Satellite System Test and Maintenance

    Responsibilities include: Performing satellite functional test mainly for the satellite transmitters, and receivers as well as other subsystem. Monitor and analyze the telemetry data and readout from test instrument. Prepare and updates test documentation. The tests are performed are functionality test and mainly to identify the software bugs. Bugs identified are reported to the software engineers for the software to be updated. Tests are performed periodically to ensure satellite is in good condition. The clean room environment is also consistently monitored to ensure it achieves the right amount of particle count, temperature and humidity. Installation, storage and functional verification of satellite are also performed each time of the satellite to be shipped to the Malaysian Space Centre for further test on optical calibration.


    MXSAT Satellite Project

    Responsibilities include:  Assigned to lead the mxsat satellite project as a project manager where I was responsible to coordinate and develop satellite subsystems components. The satellite subsystems consist of power switching circuit, on-board computers, transmitters and receivers. The subsystems are developed independently with the aims to prove the technology for future satellite mission. The subsystems are developed from schematics design, PCB layout, PCB population and test of the modules. The project achieves its objective to produce working prototype tested at bench levels.


    2002 – 2005: Telecommunication System Engineer, RazakSAT Phase 1 (Astronautic Technology (M) Sdn. Bhd. – ATSB)


    Background: The RazakSAT Telecommunication Subsystem functions to relay the telemetry information of the satellite to the ground station through the S-band Transmitter. The ground station then provides the uplink which contains Telecommand to the satellite and it is received by the S-band Receiver to demodulate the signal and provides it to the On Board Computer. The high data rate transmitter provides data captured from the optical payload to the receiving earth station. I am attached in Satellite Technology Research Centre Initiative in South Korea for nearly two years in the joint development programme at irregular intervals.


    Ground Station Development

    Responsibilities include: I am responsible to prepare the RFP for the procurement of the ground station for the RazakSAT project. I was selected as one of the technical review committee of the tender selecting for Ground Station development, installation, tests and commissioning for RazakSAT program. After the selection is completed, the government decided National Space Agency should handle the operations of the ground station. Therefore the tender was cancelled and the new tendering process was hand over to National Space Agency. The ground station will be part of the National Space Communications Infrastructure.


    Satellite Systems and Ground Support Equipments

    Responsibilities include: Design and Develop satellite RF test solutions for satellite. The test includes signal generators, spectrum analyzers, modulation analyzers, high data rate demodulators down converters and vector spectrum analyzers. I have to configure the ground support equipments are designed to be compatible and interoperable with the satellite ground station controllers and test PC’s and able to interface directly to the satellite systems. The ground support equipment is successfully use through all phase of satellite development until launch.


    Additionally I have to work on setting up the space grade manufacturing facilities to ensure satellite manufacturing, as well as storage of modules and components are well kept in ATSB. I also have to work to ensure the telecommunication and to coordinate subsystem are functionally tested in electronics lab before the satellite integration in clean room. The subsystems then must be disintegrated to be shipped to Korean Aerospace Research Institute (KARI) to perform space environment test due to lack of facilities in Malaysia at the time. 


    I am also responsible to create the data base of programme approved part list which consists of all the approved components that is required for each of the subsystems and module in the satellite. The data base is developed based on help from each subsystems engineers and final approval from the project manager.


    Telecommunication Subsystem Development

    Responsibilities include: Design, Development, manufacturing and test of the Telecommunication Subsystem consists of S-band antenna, S-band transmitter and receiver, and MODEM (Modulator and Demodulator). My task is to design, develop and manufacture and test the (Modulator and Demodulator) (MODEM) module. I have to work with another two Satreci engineers whom are responsible for the development of S-Band Receiver and Transmitter. Apart from the development work of the MODEM module, I have to work with the team to come up with the overall subsystem specifications, design descriptions, test plans and procedures and performed the system level test. Design and develop test modulator and demodulators for OBCs team usage. Identified problems with the original design of FIR filter of the modulators, the new FIR design is updated and use throughout the development and satellite mission.


    The MODEM development that I undertake consists of 4 stages of prototyping, Engineering Model (EM), Qualification Model (QM), and finally the Flight Model (FM). The cycle of this development was performed in detail where design improvement, and rigorous tests were performed to ensure the module will functions satisfactorily in the space environment without failure. Reliability is ensured starting from the design stages where superior design techniques, proper components selection process were performed in the best engineering practice. I have to manufacture the MODEM up to the ESA recommendation for soldering of high reliability electronics. The design is verified through multiple tests at component level, subsystem level, and thermal cycle test. Successfully manufactured the MODEM up to space standards for the qualification models and flight models and the MODEM has been operating in space.


    Apart from the development of the module I have to work closely with other engineers to perform the satellite system level test to ensure the telecommunication subsystem functions correctly in accordance with the specifications. My tasks were to develop test procedures for the telecommunication subsystems for each level of satellite testing. The satellite was tested in lab and at external facilities. The level of testing includes functional tests where only the electrical functionality was tested. Then the Telecommunication Subsystem modules were integrated with the rest of the satellite system to fully test its functionality and operations. Environmental tests were performed at Korean Aerospace Research Institutes (KARI). There, an environmental test such as the thermal vacuum test was performed to verify the satellite operating temperature in extreme temperature.


    Additionally I had supported the project in developing the test model for the FSK S-band receivers. The s-band receiver was tested and the design updates are reported to the lead engineer for the design to be updated for qualification and flight Model.


    I also supported in performing the verifications of the S-band antennas, and X-band antennas in Korean Advance Institute of Science and Technology (KAIST) anechoic chamber to ensure the radiation pattern of the antenna is maintained once integrated with the satellite.


    Dosimeter Satellite:

    Responsibilities includes: I am tasked to support the development of the UHF transmitter and VHF receiver on another satellite project ATSB’s was embarking on. I also assigned to verify the development of VHF receiver by the engineer in the DSAT project. Achieve to identify the major flaws of low data rate affecting the quality of the UHF FM transmitter. I proposed a modification to use scrambler to stabilizing the FM modulation of the transmitter. I upgrade the DSAT receiver to space grade by replacing the components that is susceptible to space environment such as plastics material, and electrolytic capacitors.


    2001 – 2002: System Engineer, Small Payload Orbit Transfer (SPORT) Program, Astronautic Technology (M) Sdn. Bhd and AeroAstro Inc, USA.


    Background: The SPORT (Small Payload Orbit Transfer) vehicle has been developed through a global partnership between Astronautic Technology (M) Sdn. Bhd (ATSB) of Kuala Lumpur, Malaysia, and AeroAstro, Inc. of Herndon, Virginia. Primarily designed to take advantage of the many auxiliary launch opportunities to Geosynchronous Transfer Orbit (GTO), SPORT acts as a small upper stage by moving a small payload from GTO to Low Earth Orbit (LEO), which is typically a much more desirable orbit.  An innovative combination of aerobraking and chemical propulsion allows SPORT to accomplish this mission while keeping costs low.  SPORT is coupled with small spacecraft on auxiliary or ‘piggyback’ launches on large launch vehicles.  I was assigned to work in AeroAstro Inc. in Herndon, Virginia, USA for a period of 12 month. It was a collaboration and technology transfer program between Astronautic Technology and AeroAstro. At AeroAstro I have to work with a group of engineers specialized in various engineering field. On a daily basis, I have to report to the SPORT project manager, Tony Robinson and lead system engineer, Adeena Mignogna.


    My tasks were to performed mission analysis which includes, power generation and storage analysis, Satellite and Earth communication link analysis and ground station sizing. As a result of the analyses I have to present the requirements and specifications required for the satellite and mission.


    Power Generation and Storage Analysis

    Responsibilities Include: Determining power requirements for SPORT which is more complex from typical Low Earth Orbit satellite because of constant change of altitude of the orbital apogee. This resulted in changing sunlit time and eclipse time. Additionally I have to design the solar panels sizing process to identify the right size to produce enough power required for the mission. The eclipse operations power survey and duty cycle will determine requirements for battery sizing. The achievements was I developed the mathematical model to determine the difference of eclipse and sunlit time each time the orbit changes its semi-major axis which in primarily effect the mission and the input is used to develop an accurate power budget. The solar panels and battery specifications are used in the procurement process to identify the right vendors and product for the suitable for the mission. The model I generated was use continuously in the programme by AeroAstro Inc. power engineers.


    Satellite and Ground Station Communication Link Analysis

    Responsibilities include: My task is to create a link budget base on the radar range equation. Before creating the link budget I have to identify the inputs of the link budget base on the mission requirements. The inputs of the radar range equation are operating frequencies, telemetry and telecommand data rates, RF modulation and coding method, orbital geometry, satellite attitude, transmitter power, and antenna type, directivity, and gain. Using these inputs the specifications of the satellite transmitter, receiver and antenna are derived. The link budget calculation was completed and use as a reference for the project and other space projects in ATSB.


    Additionally I have also task to build a small satellite model using aluminum sheet to test the performance of the antenna to identify its performance and radiation pattern of the antenna is not affected to the metallic structure of aerobrake. The model is tested with the antenna develop by Aeroastro engineer.


    Ground Station Design and Sizing

    Responsibilities include: To design and size the suitable ground station for the mission. The important aspect of the ground station is the size of the antenna. I have to create building blocks that support the communication link between the spacecraft and the ground station. The requirements are generated after establishing the correct design and size of the ground station. This is because the ground station can be used for other satellite mission as well. A request for proposal document is generated to be given to the ground station manufacturer. The objective of the request for proposal is to collect proposal from various ground station manufacturers for us to assess their capabilities in term of technical aspect, workmanship, price and schedule. 


    Additionally, I am also task to performed simulation to identify the right contact time and location of ground station required on the globe. The potential ground stations are based on database of the Universal Ground Station Networks which are available throughout the globe.


    1999 – 2001: Electronics Engineer, Electrical Department, Astronautic Technology (M) Sdn. Bhd.


    Responsibilities include: To understand the TiungSAT-1 satellite system and to perform PCB design, and test for Magnetorquer electronics board. I am also assigned to perform final test of the TiungSAT-1 ADCS subsystem prior to shipment to launch site.


    Additionally, I also assigned to coordinate and manage the government delegates to Baikonour Cosmodrome for the launching of TiungSAT-1 satellite. I also assigned to gather user requirements for next satellite project.


    1998 – 1999: Computer Lab Monitor, Vanderbilt University


    To ensure the engineering computer lab is in good conditions and help students and users in troubleshooting computers and network problem.




    ·         Spectrum analyzers, frequency counter, power meters, oscilloscope, vector signal analyzers, network analyzers, vector signal generators, function generators, demodulators, modulation analyzers and PC, electronics soldering and assembly.


    ·         Word, excel, power point, Visio, Microsoft outlook, Microsoft Project, Internet explorer, Matlab 5.3, Orbitron, STK, Protel DXP, RF Sim, ADS 2009


    Training and Professional Development:


    ·         Introductory to Satellite Tool Kit (STK) Training Class. By Analytical Graphics, Inc. 14 Nov 2000.

    ·         Satellite RF Communications & Onboard Processing by Applied Technology Institute. 14 Jun 2001.

    ·         NASA-STD-8739.7 Requirements for Electrostatic Discharge Control given by NASA Manufacturing Technology Transfer Center, Goddard Space Flight Center Greenbelt, Maryland. 23 Oct 2001.

    ·         Embedded Systems offered by Accel Software and Technologies Ltd. 13 Jan 2002.

    ·         Soldering Operations in conformance with ESA PSS-01-708 & ECSS-Q-70-08 (Category 3) by Highbury College, Portsmouth on behalf of European Space Agency. Nov 2002.

    ·         RF and Microwave System Design for Synthetic Aperture Radar Applications organized by National Space Agency and Microwave Technology Centre, Universiti Teknologi MARA. 23 August – 24 September 2004.

    ·         Project Management: Concepts, Tools and Techniques by KHS Consultancy and Training. 23 – 24 June 2004.

    ·         Controlling Conducted and Radiated EMI by Design by Dream Catcher Sdn Bhd. 16 – 17 June 2005.

    ·         Intellectual Property (IP) Workshop by Mindvault Sdn Bhd. 13 – 14 Sep 2005.

    ·         ESD Control Training by ESD Consultancy Sdn Bhd. 14 – 15 Dec 2005.

    ·         The Radiometric and Geometric Calibration for MAC Onboard RazakSAT by NEC Toshiba Space Systems, Ltd. 27 – 29 Mar 2006.

    ·         ESD For Space Program Training by ESD Consultancy Sdn. Bhd. 19 – 20 Sep 2006

    ·         Radio Communications Station License (Class B) / Callsign: 9W2YAA

    ·         Soldering Operations in conformance with ESA PSS-01-708 & ECSS-Q-70-08 (Category 3) by Highbury College, Portsmouth on behalf of European Space Agency. Feb 2007.

    ·         Antenna Design Using Electromagnetic Simulation by Microwave Technology Centre, Faculty of Electrical Engineering, UiTM Shah Alam 9 Apr 2007 – 18 May 2007.

    ·         Satellite Frequency Coordination and ITU Radio Regulations Masterclass by RPC Telecommunications, Sydney, Australia 11 – 15 Feb 2008.

    ·         Introduction to AWR Technologies April 2009.

    ·         The Art of Project Management by Business Management Consultant, 16 Nov 2009.

    ·         Practical RF / Microwave design, University of Oxford UK 16 July 2010.




    ·         System Level Design and Analysis of an 8 GHz Low Earth Orbit Satellite Transmitter; Yasser Asrul Ahmad, Fitri Dewi Jaswar, Mohd Ali, Hilmi Sanusi, IconSPACE 2011, Penang, Malaysia.

    ·         Challenges to Launch RazakSAT into Near Equatorial Orbit; Mohd Faizal Wong, Ahmad Sabirin Arshad, Norhizam Hamzah, Yasser Asrul Ahmad, Amir Iskandar, Hafizah Nasir, Annanthan Narayanayasamy. Internationa Aerospace Conference Daejon South Korea.


    ·         Design and development of CubeSAT modem; Fitri Dewi Jaswar, Yasser Asrul Ahmad; Colloquium in Engineering Technology 2007 (CET2007); Dec 2007


    ·         Design and Development of Satellite Communication Subsystem; Khairul Barri, Fitri Dewi, Mohd Fadhil, Yasser Asrul Ahmad, Wan Nur Fairuz; Colloquium in Engineering Technology 2006 (CET2006): Towards Intelligent Space Technology Industry, 27 Dec 2006.


    ·         Norhizam Hamzah, Ahmad Sabirin Arshad, Maszlan Ismail, Yasser Asrul Ahmad, Hafizah Nasir, Marini Abdul Hamid., “RazakSATTM : A small satellite Platform for high resolution remote sensing”, MAP Asia 2007, Kuala Lumpur, 13 – 17 Aug 2007.


    ·         Yasser Ahmad, Jin Jung Kim, “Communication System Design and Techniques for High resolution near equatorial earth orbiting satellite”, Ed): Astronautic Technology Development, :RazakSAT: Concept, Design and Development”, Astronautic Technology(M) Sdn. Bhd, ISBN 983-41773-0-7, 2004


    ·         Aaron Jacobovits, Ahmad Sabirin Arshad, Yasser Ahmad, David Goldstein., “The Small Payload Orbit Transfer (SPORT) Vehicle: Development of Processes and the Business Utility for the Next Generation of Low-Cost Small Satellite Launch Services”, 15th Annual AIAA, Utah State University Conference on Small Satellite, Logan Utah, 13-16 August 2001


    Technical Visits:


    ·         NanyangTechnical University (NTU) Singapore 1999

    ·         Surrey Satellite Technology Limited (SSTL) United Kingdom, 2000

    ·         AeroAstro Inc, VA, USA, 2000

    ·         Small Satellite Conference, Utah, 2000

    ·         Satreci Co Ltd, Daejon, South Korea, 2001, 2002, 2003, 2004, 2005, 2008

    ·         Korean Aerospace Research Institute (KARI), South Korea, 2003, 2004

    ·         Korean Advance Institute of Science and Technology (KAIST) 2004

    ·         ChinaGreat Wall, Beijing China, 2002

    ·         ChineseAcademy of Space Technology (CAST), China, 2002

    ·         SpaceX, Los Angeles USA 2004

    ·         Boeing Satellite System, Los Angeles, USA, 2004

    ·         Swedish Space Corporation, Sweden 2008

    ·         SpaceX launch Facilities, Kwajalein Atoll, Republic of Marshall Island, 2009

    ·         International Aerospace Conference, Daejon, South Korea, 2009.

    ·         Rohde & Swarchz, Munich Germany, 2009





    2007 – Present :   Board of Engineers Malaysia (BEM)

                              Professional Engineer, 2007


    2007 – Present :  Institution of Engineers, Malaysia (IEM)

                              Corporate Member (MIEM)


    1999 – 2007     :   Board of Engineers Malaysia (BEM)

                              Graduate  Engineer, 1999

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