NASA’s Commercial Satellite Data Acquisition (CSDA) Program released a new Level 1D Orthorectified multispectral archive and tasked data product from Satellogic. Now available through the program’s Satellite Data Explorer (SDX), this product provides imagery with 99-cm resolution and Top of Atmosphere (ToA) radiometric correction and offers four types of tasking that allows users to request imagery of a particular area at a specific time.
The table below provides an overview of the Level 1D Orthorectified multispectral archive and tasked data product.
| Data Product Name | Description |
|---|---|
| Level 1D Orthorectified Archive data | This data product provides images covering 25,000 square kilometers (km2) of the Satellogic archive. |
| Level 1D Orthorectified Standard Tasking with cloud cover protection of less than 5% | This data product offers a total of 1,050 observations of 50 km2. |
| Level 1D Orthorectified Priority Tasking with cloud cover protection of less than 5% | This data product offers a total of 100 observations of 50 km2. |
| Level 1D Orthorectified Rush Tasking | This data product offers a total of 10 observations of 50 km2. |
| Level 1D Orthorectified Area Tasking with cloud cover protection of less than 5% | This data product offers a total of 75 observations of 250 km2. |
This Level 1D product, which is equivalent to a NASA-defined Level 1C data product, is derived from satellites in Satellogic’s NewSat constellation, each of which carries a multispectral camera offering four bands in the visible (red, green, and blue) and near-infrared part of the electromagnetic spectrum. Each product includes all associated metadata and documentation. Note: Use of these products is governed by the United States government End User License Agreement (USG EULA).
Satellite tasking refers to the practice of directing a satellite to capture imagery of a particular – typically user-defined – area at general or specific time. This process is often used to acquire timely information about Earth's surface and is useful for a variety of applications, including agricultural assessment, disaster mitigation and response, environmental monitoring, and urban planning. As noted in the table above, Satellogic provides different types of tasking, including:
- Standard Tasking, which refers to satellite tasking a specific location or region that does not require the collection of an image at a certain time
- Priority Tasking, which refers to the capture of a specific event on a specific day, but the need for the image is not immediate
- Rush Tasking, which refers to the capture of an event and the need to see the resulting image as soon as possible
- Area Tasking, which refers to the process of commissioning satellites to capture imagery of a specific area of interest (AOI) based on user-defined parameters
Researchers interested in accessing these data in SDX can use their Earthdata Login for authentication and to initiate data download requests. Data will be made available for download upon approval and acceptance of the EULA.
The Satellogic website provides detailed information about the Level 1D products. For more information on CSDA's SDX tool, see the user guide.