PSLV : HRSAT-1A/B : 2027

[zubenelgenubi]

HRSAT triplet

I suppose the total mass of the satellites and their adapters, and secondary payload mass and orbital delivery requirements, if any, will determine the PSLV model used.

(The mass of 3 satellites built on a SSB-2 spacecraft bus could exceed the SSO capacity of a PSLV-CA?  Then there's the payload adapters for the HRSATs.  And, if there are any secondary satellite payloads, their mass and orbital delivery requirements must be met.)

[input~2]

About 19 millions US$ have been budgeted until April 2020 for the HRSAT program

[zubenelgenubi]

Is HRSAT cancelled?  Or delayed indefinitely?

List of Indian Earth observing satellites with scheduled launch time period; the list appears to have been updated in October 2022:
http://database.eohandbook.com/database/agencysummary.aspx?agencyID=11

Approved Missions

OCEANSAT-3              Nov 2022 (launched Nov 26)

NISAR                          Sep 2023 (other sources say 2024)

TRISHNA                    Dec 2024

OCEANSAT-3A           Nov 2025

RESOURCESAT-3       Nov 2025

RESOURCESAT-3S     Jun 2026

Planned Missions

INSAT-3DS                  2023

RISAT-1B                     2023

RESOURCESAT-3A    2026

RESOURCESAT-3SA  2027

Considered Missions
none

HRSAT (was Aug 2023 launch) and ATMSAT-1 (was 2025 launch) are gone from the list.

[AndrewM]

EOHandbook is still not showing these but OSCAR is now showing just 2 HRSAT-1 satellites with a launch date >2027. OSCAR shows the last update date of 2024-11-25.

https://space.oscar.wmo.int/satellites/view/hrsat_1a
https://space.oscar.wmo.int/satellites/view/hrsat_1b

[AndrewM]

Sounds like this is still in development and tracking a 2027 launch as indicated by OSCAR.

PARLIAMENT QUESTION: UPDATES ON THE SPACE APPLICATIONS CENTRE OF ISRO [Apr 3]

The notable technologies that were developed by the Space Applications Centre for spacecraft payloads including S-Band SAR for NASA-ISRO Synthetic Aperture Radar (NISAR) mission, C-Band and X-Band Microwave Radars for RISAT series, Lander/Rover Cameras, Ka Radar Altimeters, Hazard Detection and Avoidance  Sensors for Lunar Landing for Chandrayaan-3, demonstration of spectrum sensing, ADS-B, GNSS-R reflectometry, Pseudolite systems for RLV, High resolution Electro-optical payloads, Ka-band payload for high throughput satellites (50 Gbps), spread-spectrum modems for Gaganyaan crew communication system, Indian Atomic clock-Indian Rubidium Atomic Frequency Standard (IRAFS) for NavIC and Travelling Wave Tube Amplifiers (TWTA) for Communication satellites. Currently, a large number of payloads are under various stages of realization at SAC including, GSAT-7R, HRSAT Series, Resourcesat-3 series, Oceansat-3A, G20- Satellite, Indian Mauritius Joint Satellite (IMJS), GSAT-N3, IDRSS-2, payloads for Quantum Communication.

PARLIAMENT QUESTION: SPACE PROJECTS IN LADAKH [Aug. 20]

ISRO is realising Resourcesat-3 & 3A, Resourcesat-3S & 3SA, HRSAT, G20 Satellite and TRISHNA Satellite by 2027-2028, to improve remote sensing observations in the country, benefiting the Union Territory of Ladakh also.