IRS meaning in Space Science ?

Answer: What is Inertial Reference System mean?

An inertial navigation system (INS) is a navigation device that uses a computer, motion sensors (accelerometers) and rotation sensors (gyroscopes) to continuously calculate by dead reckoning the position, the orientation, and the velocity (direction and speed of movement) of a moving object without the need for external references. Often the inertial sensors are supplemented by a barometric altimeter and sometimes by magnetic sensors (magnetometers) and/or speed measuring devices. INSs are used on mobile robots and on vehicles such as ships, aircraft, submarines, guided missiles, and spacecraft. Other terms used to refer to inertial navigation systems or closely related devices include inertial guidance system, inertial instrument, inertial measurement unit (IMU) and many other variations. Older INS systems generally used an inertial platform as their mounting point to the vehicle and the terms are sometimes considered synonymous.

reference

Full Form	Category
Instructor Rating System	Academic & Science
Intelligent Responsible Students	Academic & Science
International Relations Society	Academic & Science
Illinois Reading Society	Academic & Science
International Reference Star	Academic & Science
Individualised Research Study	Academic & Science
Société Internationale Renardienne	Academic & Science
International Reynard Society	Academic & Science
Irreverent Rodent Society	Academic & Science
Interesting Readers Society	Academic & Science
Internal Revenue Service	Accounts and Finance
Increasing Returns To Scale	Accounts and Finance
Sturgis (mi)	Airport Code
Investor Relations Society	Associations & Organizations
Indian Register of Shipping	Associations & Organizations
Institute of Regional Studies	Associations & Organizations
Irsa Inversiones y Represent	Business
Inventory and Resource System	Business
Independent RV Sellers	Business
Internal Regulating Services	Business
Instant Refund Station	Business
Information And Referral Services	Business
Identify, Reduce, and Schedule	Business
Indoor Residual Spray	Chemistry
Italian Rhythm Section	Community
Interested Readers' Society	Community
Irwin R. Scheister, wrestler (real name: Lawrence Michael Rotunda)	Community
Intermediate Reference System	Computer and Networking
Interchange Recors Separator	Computing
It Really Stinks	Computing
Intelligent Register System	Computing
Image Results and Security	Computing
International Rongdoing Society	Computing
Infra Red Sensor	Computing
Interchange Record Separator	Computing
International Retail Service	Computing
Initial Receive Sequence	Computing
Intel Real Sense	Computing
Information Retrieval Service	Computing
Internet Radio Station	Computing
Inter-Domain Routing Security	Computing
Indian Remote Sensing	Earth Science
Infrared Spectroscopy	Electronics
Resource (wordperfect)	File Type
International Riot Society	General
Infernal Revenue Service	General
Iron Ring Stag	General
Income Revenue Service	General
Irate Raging Spouse	General
Improving The Republican Summer	General
Information Retrieval System	General
Inserted Rectally Service	General
Instinctive Reaction To Struggle	General
Interesting Rural Scenery	General
International Responsibility Seminar	General
I Remain Standing	General
International Revange Service	General
Instant Recreational Satisfaction	General
Integrated Reception System	General
Internal Revenue Selfies	General
Increased Rotational Speed	General
Indian Readership Survey	General
Internal Revenue Services	General
Insensitive Ruthless Shysters	General
inverse Raman scattering	General
Information and Reporting Services	General
Internal the R Stands	General
Innovative Reflection Spotlight	General
I Ride Slow	General
Insulin Receptor Stke	General
Inmate Roommate Soulmate	General
It's Really Stealing	General
Intrapulse Raman Scattering	General
Invisible RattleSnakes	General
Implicit Radiation Solver	General
Independent Rear Suspension	General
Integrated Restraint System	General
Infrared Locking System	General
Illini Racing Series	General
Inflatable Restraint System	General
Intelligent Radar Sensor	General
Intelligent Road Studs	General
Impreza Rs	General
International Relief Service	Governmental
Inhibit Republican Speech	Governmental
Indian Residential Schools	Governmental
Identical, Related, or Similar	Governmental
Incident Reporting System	Governmental
Indian Revenue Service	Indian Ministry of Finance
International Rod Society	International
International Revenue Service	International
I'm Really Sexy	Internet
It's Really Sexy	Internet
I'm Really Sweet	Internet
Institutional Representatives	Jobs
Inverse Repeated Sequence	Maths
Isolation Resistance Sanitation	Medical
Insulin Receptor Substrate	Medical
Insulin Resistance Syndrome	Medical
Irritable Rabbit Syndrome	Medical
Internal Responsibility Syndrome	Medical
Irritable Ricky Syndrome	Medical
I Respect Someone	Messaging
Intimate Relations Schedule	Messaging
Interface Requirements Specification	Military and Defence
Information Reporting System	Military and Defence
In Range Shooting	Military and Defence
Information and Reconnaissance Ship	Military and Defence
Indoor Residual Spraying	Real Estate
Inertial Reference System	Space Science
Internet Racer's Supply	Sports
Interest Rate Swap	Stock Exchange
Kirsch Municipal Airport	Transport & Travel