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Choose a SAR satellite imagery provider by matching its available collections and data products to your area of interest (AOI), required detail, schedule, analysis workflow, sharing rights, and total cost—not by comparing headline resolution alone. SAR uses active radar, so it can collect without sunlight and has cloud-penetrating capability, but radar imagery is not simply an optical photograph. Ask shortlisted providers for an AOI- and date-specific feasibility assessment, sample data, and a quote with the same requirements.
Start with the mapping or monitoring job
Before comparing providers, write down what the project needs to observe and what decision the imagery must support. A baseline map, retrospective analysis, event response, and repeated change detection can require different acquisition dates, geometry, cadence, and processing.
- AOI: Give the coordinates or boundary, approximate area, and any priority locations.
- Target and decision: Describe the features or changes you need to assess and how the results will be used. Do not assume a stated pixel size guarantees that a particular object or change can be detected.
- Time need: Specify the historical period, monitoring interval, event window, and latest useful delivery time.
- Analysis method: Say whether you need a single image, repeat acquisitions, or data suitable for change detection or another radar analysis.
- Use and audience: State who will analyze, see, receive, or publish the data and derived outputs.
SAR returns contain signal-strength and phase information related to surface texture, material, structure, and motion. ICEYE describes these properties in its product material; how useful they are depends on the target and analysis method. Ask the provider whether its proposed product and acquisition geometry suit that method rather than treating the image as a drop-in substitute for optical imagery.
Compare resolution and footprint together
Request specifications for the exact mode and product being quoted: ground resolution, scene width and length, imaging geometry, and any relevant product-quality details. Higher detail and wider coverage are not interchangeable; high-detail modes generally focus collection on a smaller area, while broader modes cover more ground at coarser detail.
For a concrete example, Capella lists Stripmap resolution as 1.2 m azimuth and 0.75 m slant range, with a scene width of 5–10 km and length of 20–100 km. Its Parallel Stripmap listing gives the same stated resolution values with a 20 km scene width and 20–100 km length. These are Capella product specifications, not a guarantee that a target of a given size will be detectable. Confirm how the provider defines resolution and scene dimensions for the quoted product, and whether the whole AOI can be covered as requested.
ICEYE’s product documentation also describes tradeoffs among scene size, resolution, and image quality. Compare the product actually offered for your AOI rather than assuming two providers’ mode names or resolution figures describe equivalent imagery.
Separate revisit, collection, and delivery
These are different schedule questions: how often a satellite could revisit, whether the provider can collect your AOI during the requested window, and how soon the data will be delivered after acquisition. Ask for each answer in writing, tied to your coordinates, dates, mode, and tasking priority.
Rank #2
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- Revisit capability describes a potential collection opportunity, not a guaranteed acquisition on a chosen date.
- Collection likelihood or service level should specify its conditions and the exact tasking option. ICEYE’s version 6.0.8 product specification describes commercial priority collections as having a statistical likelihood exceeding 90%, or 80% for its 1-hour service level. The 1-hour option is conditioned on commercial tasking and a successful feasibility check; these are ICEYE service statements, not a provider-neutral guarantee.
- Delivery time begins after a defined event, usually acquisition; confirm the clock, processing level, and delivery method rather than treating revisit as delivery speed.
Airbus advertises intraday revisit capability for One Tasking. Its OneDay scheduling description says a weather forecast is sent 24 hours before acquisition so the customer can confirm, postpone, or cancel at no cost. Ask which radar mission and product apply to your project, and confirm the exact terms for your AOI. The page also discusses Airbus optical services, so ensure a proposal is specifically for SAR.
Decide whether archive data or new tasking fits
Archive imagery may meet a baseline or retrospective need if dates, coverage, licensing, and acquisition geometry are suitable. A specific event window or repeat cadence may require new tasking. Ask providers to identify the available archive acquisitions for the AOI and dates, not merely to confirm that an archive exists.
- For archive data, verify acquisition dates, mode, geometry, product level, license, and whether the scenes are usable for the planned comparison.
- For tasking, request the collection window, priority option, feasibility result, and delivery terms.
- Confirm how tasking is placed and managed. ICEYE describes ordering archive imagery and requesting tasking through support or its API. Capella describes cloud-native tasking through a web console or API, including automated collection workflows.
Match the product and metadata to your workflow
Ask whether the analysis needs detected/geocoded imagery or a complex product, and confirm the exact format, processing level, and metadata supplied. A format name alone does not establish that a product meets the workflow’s calibration, geolocation, or interoperability requirements.
Capella lists detected formats SIDD, GEO, GEC, and CSI, and complex formats SICD, SLC, and CPHD. It says its data integrates with common geospatial software. Its SAR Data Product Guide page identifies version 4.4, last updated December 10, 2025. Ask for the current guide and confirm the product version included in the quote.
For the chosen analysis method, check coordinate reference system, polarization, incidence angle, calibration, processing details, and metadata completeness. These details are project-specific; the cited product overview does not settle every requirement. Request representative sample data and its metadata before committing, and test it in the intended software or processing workflow.
Compare licensing and total cost on equal terms
Establish what the project may do with both the imagery and any derived products: internal analysis, client or collaborator sharing, publication, redistribution, and attribution. Umbra’s pricing page describes data as sold under CC BY 4.0 and says customers can share data openly and collaborate. Verify the actual license and any order-specific terms before relying on that page description.
Umbra’s pricing page, as accessed October 3, 2026, lists the following 5 × 5 km imagery prices. The page content captured for that date does not state a publication date; treat these as displayed prices, not a timeless rate card. The number of looks differs by resolution, so the endpoints below are not equivalent products.
| Umbra 5 × 5 km imagery product | Displayed price range by listed look count | Qualification |
|---|---|---|
| 1.0 m | $675 for one look through $2,200 for ten looks | Page-listed pricing; verify the current product scope and terms. |
| 0.5 m | $950 for one look through $2,600 for eight looks | Page-listed pricing; verify the current product scope and terms. |
| 0.35 m | $1,750 for one look through $3,500 for five looks | Page-listed pricing; verify the current product scope and terms. |
| 0.25 m | $3,250 for one look through $4,900 for three looks | Page-listed pricing; verify the current product scope and terms. |
| Dwell | $4,750 | Separately listed 5 × 5 km Dwell price; confirm included scope. |
The Umbra page also lists scan prices by track length and resolution; the reviewed material does not establish comparable scan amounts here. For any provider, normalize a quote against the same AOI, mode, product, number of looks, tasking priority, delivery target, and license. Confirm currency, any minimum area or additional service charges, and which displayed items are included. Do not compare one provider’s single-look price with another’s multi-look or differently processed product.
Evaluate provider evidence without treating it as a ranking
Official capability pages establish what providers say they offer; they do not provide a universal winner or prove collection feasibility for a particular location and date. Use the following snapshot to direct questions, then compare written proposals using the same project requirements.
Best Value
| Provider | What its reviewed official material describes | What to verify for your project |
|---|---|---|
| ICEYE | Multiple imaging modes, mode tradeoffs and service levels, archive ordering, and tasking via support or API. | AOI/date feasibility; exact mode and footprint; collection likelihood under the quoted priority; delivery clock; archive access; format and license. |
| Capella | Multiple modes and product formats, multi-orbit coverage, web-console/API tasking, and automated collection workflow. | Current guide and product version; AOI-specific options; data level; expected delivery; collection window; license; end-to-end cost. |
| Umbra | Public pricing tables for 5 × 5 km imagery and scans, and a pricing-page description of CC BY 4.0 licensing. | Whether the listed price applies to the requested product and look count, delivery, and added services; confirm attribution and contract terms. |
| Airbus | One Tasking describes intraday revisit capability and OneDay acquisition planning with a forecast 24 hours before the date. | Applicable SAR mission/product; resolution and footprint; AOI feasibility; delivery service level; license; total quote. |
NASA’s Commercial Satellite Data Acquisition (CSDA) evaluation framework provides useful procurement questions about data accessibility, metadata accuracy and completeness, documentation, user-support promptness and quality, and data usefulness for Earth-system science. NASA lists evaluations involving Airbus U.S. SAR, Capella SAR, ICEYE U.S. SAR, and Umbra SAR. Its evaluation framework is not a league table for every product or mapping project; use those criteria to assess evidence relevant to your own use.
What to request before choosing
Send every shortlisted provider the same concise requirements brief and ask for a written, AOI-specific response. This makes differences in feasibility, product scope, and price visible instead of relying on marketing-page specifications.
- Provide the AOI boundary, target, use case, relevant dates, and any event or repeat-monitoring window.
- Request the proposed sensor/mode, resolution definition, scene dimensions, collection geometry, and coverage plan for the AOI.
- Ask for archive options and tasking options separately, including feasibility, collection likelihood and conditions, and any alternative dates.
- Specify delivery deadline and required product level, formats, metadata, and processing details; request representative sample data.
- State sharing, publication, redistribution, attribution, and derived-product needs; request the applicable license and contract terms.
- Ask for an itemized total covering imagery, looks, tasking priority, processing, delivery, and any other fees, using consistent scope across providers.
- Compare service evidence: access method, documentation, metadata completeness, support route, and response expectations.
Recheck specifications, price pages, and terms at procurement time. The provider material summarized here includes ICEYE documentation version 6.0.8, Capella’s guide page version 4.4 last updated December 10, 2025, and a NASA report with an effective date of October 1, 2024; product offerings and commercial terms can change.
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