Sisir Radar
| Constellation area |
SAR |
| Constellation info |
Building a constellation world's first SAR satellite with simultaneous imaging in L and P band.
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| Constellation state |
Early stage |
| Launched satellites |
0 |
| Planned satellites |
? |
| Satellite type |
? |
| First launch |
? |
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| Name |
Sisir Radar |
| Description |
Sisir Radar is poised for big leap towards building a constellation world's first SAR satellite with simultaneous imaging in L and P band.
X band is good for imaging in desert, arid and snowclad plains. For tropical and equatorial countries spread over south Asia, Africa, Central and South America, X band can hardly peep through dense foliage. On the contrary, L and P band can not only penetrate foliage to a great extent,but can also peep underground in less forested region, making these bands ideal for carbon credit estimation, forestry, agriculture, mining and needless to say, ideal for military and naval applications. In short, these low frequency bands are ideal for applications in all types of terrains.
When all the advantages are there in L and P bands, surprisingly there is big crowd of satellites in X band, simply because the hardware is smaller and resolution better than 1 m is easily achievable, leaving real gap of opportunity in P and L band.
Sisir Radar decided to feel the gap with innovation and breaking the jinx that you cannot achieve resolution better than 2.5 m in L band. Our innovation also shattered the myth of bulky hardware in L and P band by simply reducing number of hardware elements using reflector antenna.
The prevalent high resolution SAR imaging is in spotlight mode, yielding patchy imaging of around 15 to 20 patches of typically 10-20 km square each, over a complete orbit. Sisir Radar uses a novel concept of "array of synthetic aperture arrays" to deliver sub meter resolution in L band. Unlike spotlight mode we don't need to steer the beam over the target area. So our high resolution imaging is a seamless strip map one, yielding sub metric resolution over 30-40 km swath. Or to put it succinctly, each of our SAR satellite will image 100X area per orbit in comparison to any of the present day high resolution SAR satellites.
In short Sisir Radar is going to disrupt the SAR data market in terms of utility, coverage, resolution and of course in pricing.
PS : Our L+P band SAR payload is as light as those in X band, around 90 kg.
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| Location |
India |
| Founded |
2022 |
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Last modified: 2024-10-15