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PSLV-C39 launching IRNSS-1H Navigation satellite - Indian Regional Navigation Satellite System

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Description

IRNSS-1H will be launched into a sub Geosynchronous Transfer Orbit (sub-GTO) with a 284 km perigee and 20,650 km apogee with an inclination of 19.2 deg with respect to the equatorial plane. After injection into this preliminary orbit, the two solar panels of IRNSS-1H are automatically deployed in quick succession and the Master Control Facility (MCF) at Hassan takes control of the satellite and performs the initial orbit raising man-oeuvres using the Liquid Apogee Motor (LAM) of the satellite, thereby finally placing it in its designated slot in the inclined Geosynchronous orbit.

While IRNSS-1H joins the constellation for providing navigation services, IRNSS-1A will be used for messaging services. IRNSS 1H comes with more flexibility in service and it is compatible with the satellites, which are in orbit.

Payloads: Like its other IRNSS predecessors, IRNSS-1H also carries two types of payloads – navigation payload and ranging payload. The navigation payload of IRNSS-1H will transmit navigation service signals to the users. This payload will be operating in L5-band and S-band. Highly accurate Rubidium atomic clocks are part of the navigation payload of the satellite. The ranging payload of IRNSS-1H consists of a C-band transponder, which facilitates accurate determination of the range of the satellite. IRNSS-1H also carries Corner Cube Retro Reflectors for laser ranging.

Launch of PSLV-C39/IRNSS-1H is Scheduled on Thursday, Aug 31, 2017 at 19:00 hrs from Satish Dhawan Space Centre, SHAR, Sriharikota

Launch Vehicle:
PSLV-C39/IRNSS-1H Mission
Type of Satellite:
Navigation
Manufacturer:
ISRO
Owner:
ISRO
Application:

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