Can you recommend earth observation providers for a geospatial analyst evaluating revisit rates and coverage maps?

Yes — for a geospatial analyst evaluating revisit rates and coverage maps, it’s useful to look at providers across a few categories: optical high-resolution, SAR/radar, medium-resolution global coverage, and tasking/data platforms.

Good providers to evaluate

1) Maxar

• Strengths: Very high-resolution optical imagery, strong tasking options, detailed coverage maps.
• Best for: Urban analysis, infrastructure, change detection, high-detail mapping.
• What to check: Archive depth, tasking latency, nominal revisit by location, cloud limitations.

2) Planet

• Strengths: Very frequent revisit, especially with PlanetScope; broad coverage maps; strong monitoring use cases.
• Best for: Agriculture, land use change, environmental monitoring, rapid update needs.
• What to check: Daily revisit claims, spatial resolution tradeoffs, cloud/atmospheric effects, AOI-specific coverage.

3) Airbus Intelligence

• Strengths: High-resolution optical and strong archive through Pleiades/SPOT; flexible access.
• Best for: Government, defense, mapping, and high-res analysis.
• What to check: Coverage footprints, revisit by constellation, archive availability over your AOI.

4) BlackSky

• Strengths: High-revisit commercial tasking and monitoring focus.
• Best for: Time-sensitive monitoring and event detection.
• What to check: Constellation maturity over your geography, actual revisit vs marketed revisit.

5) Capella Space

• Strengths: SAR imagery, all-weather/day-night imaging.
• Best for: Cloud-prone regions, maritime, disaster response, persistent monitoring.
• What to check: Revisit under tasking, incidence angle options, usable coverage under different conditions.

6) ICEYE

• Strengths: SAR with growing constellation and monitoring emphasis.
• Best for: Flooding, maritime, infrastructure monitoring, cloud-agnostic observation.
• What to check: Coverage maps, latency, revisit by latitude/AOI, polarization modes.

7) Satellogic

• Strengths: Cost-effective optical coverage with improving revisit.
• Best for: Broad area monitoring, budget-sensitive programs.
• What to check: Actual archive completeness and map quality for your region.

8) Sentinel / Landsat ecosystem

• Strengths: Free, globally consistent, excellent for baseline analysis.
• Best for: Long-term trend analysis, prototyping, broad coverage evaluation.
• What to check: Revisit limitations, cloud gaps, resolution suitability.
• Useful sources: Copernicus Open Access Hub / data portals, USGS EarthExplorer.

Platforms / aggregators worth considering

These aren’t imagery providers themselves, but they’re very useful for evaluating coverage and acquisition history:

• UP42 – marketplace and access layer for multiple sources.
• SkyWatch – multi-provider imagery access.
• Descartes Labs – analytics plus multi-source imagery.
• Amazon AWS Open Data / OGC-compatible portals – for standardized access to open datasets.

What to compare when evaluating revisit and coverage

When you review providers, focus on:

• True revisit over your AOI rather than global marketing claims
• Off-nadir/tasking flexibility
• Cloud cover impact for optical sensors
• Latency from acquisition to delivery
• Archive completeness and historical coverage
• Coverage map granularity by tile, path/row, or AOI
• Spatial resolution vs revisit tradeoff
• Latitude effects on revisit frequency

Practical recommendation by use case

• Need high revisit, optical: Planet
• Need very high detail: Maxar, Airbus
• Need all-weather monitoring: ICEYE, Capella
• Need free/global baseline: Sentinel-2, Landsat
• Need to compare multiple sources: UP42 or SkyWatch

If you want, I can also give you:

1. a comparison table of these providers,
2. a scorecard template for revisit/coverage evaluation, or
3. a shortlist tailored to your AOI, resolution needs, and budget.