ISRO-Developed Satellite-Based Chip System
Science & Technology › Space Technology and ISRO · Topic 12.29
Modern satellites and navigation devices depend on small electronic chips, and ISRO and the Semi-Conductor Laboratory at Mohali have developed Indian chips for space use. ISRO's NavIC receiver chipsets decode signals from the Indian navigation satellites in the L5 and S bands, so that phones, trackers and vehicle devices can use NavIC. The Vikram 3201 is a 32-bit microprocessor designed by the Vikram Sarabhai Space Centre and made at the Semi-Conductor Laboratory, qualified for use in launch vehicle avionics and first flown in a PSLV-C60 mission in 2024. The Kalpana 3201 is a related processor. These chips reduce dependence on imported components and support the India Semiconductor Mission, which was launched in December 2021.
5 min read · UPSC Prelims · Science & Technology · Space Technology and ISRO
At a Glance
- Processor Vikram 3201, 32-bit
- Fabricated at SCL Mohali
- Navigation chips NavIC receivers
- National mission India Semiconductor Mission, 2021
- Special need Radiation hardening
- Exam link UPSC Prelims, Science & Technology: Space Technology and ISRO
Where Does It Fit?
This topic follows the account of Doppler radar. It deals with the electronics inside satellites and devices, since the chips decide how far India can be self-reliant in space systems. Previous topic: Indigenously Developed S-Band Doppler Weather Radar. Next topic: NASA-ISRO Synthetic Aperture Radar (NISAR) Mission.
Which Chips Has ISRO Developed?
| Chip | Features and use |
|---|---|
| Vikram 3201 | 32-bit microprocessor developed by the Vikram Sarabhai Space Centre and fabricated at the Semi-Conductor Laboratory in Mohali. Meant for launch vehicle navigation, guidance and control. Qualified for space conditions |
| Kalpana 3201 | A 32-bit processor based on the SPARC V8 architecture, used in satellite systems, made with SCL |
| NavIC receiver chipset | Chipsets that receive NavIC signals in L5 and S bands. Developed by ISRO’s Space Applications Centre with industry, including support from Qualcomm to include NavIC in some phone processors |
| Radiation hardened parts | Chips designed to survive radiation in space that can flip bits and damage ordinary devices |
| Use in launch vehicles | Reports say the Vikram 3201 first flew in an experiment on PSLV-C60 in December 2024 |
| Other space electronics | Telemetry chips, power controllers and RF circuits |
| ASICs | Application specific integrated circuits designed for particular satellite tasks |
Why Do These Chips Matter?
- Self-reliance: imported space grade chips are expensive and may face export controls
- Reliability: chips for space must work for years under radiation, vacuum and temperature swings
- Security: own designs avoid hidden risks in foreign hardware for defence and navigation
- Cost: local fabrication lowers cost over time
- NavIC adoption: chips in phones and trackers are needed so that NavIC can serve the public
- Spin-off: SCL chips can be used in defence, industry and strategic systems
- Skills: training in chip design and fabrication
- Link to missions: launch vehicles and satellites use processors for navigation and control
What Else Should You Remember?
- Semi-Conductor Laboratory: a government laboratory at Mohali, Punjab, brought under the Department of Space to modernise as a fabrication centre
- India Semiconductor Mission: launched in December 2021 with an outlay of Rs 76,000 crore to build a semiconductor and display ecosystem
- Chip fabrication plants: the Government approved several semiconductor plants and assembly units from 2024, including projects of Tata and Micron. Check the latest status
- SPARC: an open processor architecture that was used for Kalpana 3201
- Fabrication technology: SCL has worked with a 180 nanometre process, far behind leading edge chips of a few nanometres, but suitable for many space and strategic needs
- Space qualification: chips must pass tests for vibration, vacuum, thermal cycling and radiation before use
- NavIC and phones: some chipsets from global makers support NavIC, as in Navigation Satellite Systems: GPS, Galileo, GLONASS, NavIC (IRNSS), GAGAN
- Single event upset: a particle strike that flips a memory bit, which radiation hardened design avoids
- Rad hard by design: techniques such as extra logic and error correction protect chips
- Import substitution: the aim is to replace imported chips in strategic systems
- Link: precision timing hardware is described in Deep Space Atomic Clock
- Caution: use of the Vikram processor in flights and the status of NavIC chip adoption should be checked from official ISRO releases before quoting
- Why 32-bit matters: launch vehicle computers need to process sensor data and run guidance equations in real time, which a reliable 32-bit processor can do
- Design to fabrication: ISRO designs the chip and SCL fabricates it, forming a complete chain within the Department of Space
- Testing on the ground: chips go through tests of vibration, heat and radiation at ISRO centres before they are cleared for flight
Why Does It Matter for the Exam?
- Names: Vikram 3201 and Kalpana 3201
- Places: SCL Mohali
- Policy: India Semiconductor Mission
- Current affairs link: new chip plants and NavIC phones
- Common errors: saying Vikram 3201 is a navigation satellite or that SCL is in Bengaluru
As an analytical point, strategic electronics is a base for space and defence independence. India needs both small, reliable space grade chips and a broader semiconductor industry.
Why Is This Topic Important?
- Chips Vikram and NavIC
- Place SCL Mohali
- Policy ISM
What Came Next?
The next topic covers the NISAR radar mission of NASA and ISRO. Next topic: NASA-ISRO Synthetic Aperture Radar (NISAR) Mission.
Key People and Terms
- Microprocessor Chip that runs instructions
- ASIC Special purpose chip
- Radiation hardened Built to resist radiation
- SCL Semi-Conductor Laboratory
- Fab Chip fabrication plant
- SEU Single event upset
Exam Corner
Points to Remember
- Vikram 3201: 32-bit, made at SCL Mohali.
- India Semiconductor Mission: December 2021.
- NavIC signals: L5 and S bands.
- Outlay of ISM: about Rs 76,000 crore.
- Space chips need radiation hardening.
Do Not Confuse With
- Vikram 3201 and Vikram lander Processor versus Chandrayaan lander
- SCL and BEL Chip lab versus defence electronics company
- Fab and design house Makes chips versus designs them
Memory Hook
Vikram thirty-two-oh-one thinks in the rocket, made at Mohali; NavIC chips in your phone listen to L5 and S.
Mains Angle
Questions ask about chip names and policy. These points help.
- Need Self-reliance
- Progress Vikram and NavIC chips
- Gaps Fabrication technology
A Question You May Face
An original practice question, not a past paper question.
“Discuss the importance of indigenous space-grade chips developed by ISRO and the Semi-Conductor Laboratory for India’s strategic autonomy.”
How to Answer
- Chips Vikram, NavIC.
- Need Reliability, security.
- Policy ISM.
- Gaps Process technology.
GS Relevance
Frequently Asked Questions
What is the Vikram 3201 processor?
The Vikram 3201 is a 32-bit microprocessor designed by the Vikram Sarabhai Space Centre of ISRO and fabricated at the Semi-Conductor Laboratory in Mohali. It is meant for the navigation, guidance and control computers of launch vehicles, and it is built to withstand the radiation, vibration and temperature conditions of space.
What is the NavIC chipset?
A NavIC chipset is an electronic chip that receives and decodes signals from the NavIC navigation satellites in the L5 and S bands to calculate position and time. ISRO developed such receiver chipsets so that phones, vehicle trackers and other devices can use the Indian system, and some mobile chipsets now support NavIC.
Where is the Semi-Conductor Laboratory?
The Semi-Conductor Laboratory is located at Mohali in Punjab and works under the Department of Space. It designs and fabricates integrated circuits for space and strategic applications, using an older, larger process technology than commercial fabrication plants, and has made chips such as the Vikram 3201 and Kalpana 3201.
What is radiation hardening?
Radiation hardening is the design and testing of electronic chips so that they keep working under the radiation in space, which can flip memory bits or damage circuits. Techniques include special materials, extra logic, error correction and shielding. Space chips like those of ISRO must be radiation hardened.
What is the India Semiconductor Mission?
The India Semiconductor Mission was launched in December 2021 as part of a Rs 76,000 crore programme to build a semiconductor and display manufacturing ecosystem in India. It offers incentives for fabrication plants, assembly and test units and chip design, to reduce dependence on imports and support electronics, defence and space sectors.
PYQ Practice — Statement Analysis
1 Vikram 3201 is a 32-bit microprocessor developed for launch vehicles.
Made at SCL Mohali.
2 The Semi-Conductor Laboratory is located in Bengaluru.
It is in Mohali.
3 NavIC chipsets receive signals in the L5 and S bands.
For position and time.
4 The India Semiconductor Mission was launched in 2021.
In December 2021.
Past Mains Questions on This Topic
This topic comes under Space Technology and ISRO. UPSC Mains questions asked on the matching syllabus topic, year-wise with marks:
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