Key Takeaways
- Commercial Earth observation satellites now provide persistent, high-resolution imagery of nearly any location on Earth with minimal legal constraints.
- Privacy rights in the space context remain poorly defined, with domestic surveillance law providing limited protection from orbital observation.
- Responsible use frameworks adopted by imagery companies are voluntary, unevenly enforced, and largely invisible to the people being observed.
The Eye That Never Blinks
On any given day, more than 1,000 commercial imaging satellites pass over populated areas collecting data that can be purchased by governments, corporations, researchers, journalists, and, in some cases, virtually anyone with a credit card and a use case that satisfies the operator’s terms of service. The imagery these satellites collect ranges from 50-centimeter resolution photographs sharp enough to identify individual vehicles to multi-spectral data that can reveal crop health, industrial emissions, and underground structures.
The commercial Earth observation industry has grown from a handful of government-adjacent companies in the 1990s to a competitive global sector. Planet Labs operates a constellation of more than 200 Dove satellites that images the entire Earth’s landmass every day. Maxar Technologies operates WorldView satellites capable of collecting imagery at 30-centimeter resolution, fine enough to identify individual people in some contexts. Airbus Defence and Space offers its Pleiades constellation at 30 centimeters as well. Satellogic has deployed a growing constellation focused on frequent revisit rates for monitoring change over time. Capella Space and ICEYE operate synthetic aperture radar satellites that collect data through cloud cover and at night, capabilities that optical systems lack.
The technology has advanced to a point where the ethical questions that used to be hypothetical are now operational. Whether commercial satellite imagery can be used to monitor individuals, track protest movements, support authoritarian surveillance, or collect data about people who have no knowledge they are being observed is not a theoretical concern. These things are happening.
The Legal Vacuum
The legal framework governing commercial remote sensing in most jurisdictions was built around a set of assumptions that are no longer accurate. In the United States, commercial imaging satellites are regulated primarily under the Land Remote Sensing Policy Act of 1992 and its successor provisions, which established a licensing system administered by the National Oceanic and Atmospheric Administration. The regulatory framework was designed to ensure national security review of commercial imaging capabilities, not to protect the privacy of individuals who might be observed.
The concept of a “reasonable expectation of privacy,” which forms the foundation of Fourth Amendment jurisprudence in the United States, has historically been interpreted to exclude areas visible from public vantage points. Courts applied this reasoning to aerial photography decades ago, and it has carried over to satellite imagery by implication rather than by explicit judicial analysis. If a person can be photographed from an aircraft flying over their property, the logic goes, then they have no reasonable expectation of privacy from observation from space.
That reasoning was developed when aerial surveillance required dedicated aircraft, cost substantial money, and could not be sustained persistently over any given location. The technical realities that made the “no expectation from above” rule tolerable no longer apply. Commercial satellite constellations can revisit locations multiple times per day. Persistent monitoring of an individual’s home, workplace, religious institution, or medical facility is technically feasible at a cost that is declining toward zero. The law has not kept pace with that change.
The European Union’s General Data Protection Regulation, known as GDPR, provides stronger protections than U.S. law for personal data, and it applies to the processing of data about identifiable individuals regardless of how that data was collected. Whether satellite imagery that could identify specific individuals falls under GDPR protection is a question that has not been definitively answered by European data protection authorities. The European Data Protection Board has not issued guidance specifically addressing commercial remote sensing, leaving a significant interpretive gap.
Who Is Watching and Why
The customers for commercial Earth observation data span a wide spectrum of purposes, many of them clearly beneficial and some of them troubling.
Environmental monitoring represents one of the most valuable applications. Global Fishing Watch, a nonprofit that uses satellite imagery and AIS vessel tracking data to monitor illegal fishing, has published research documenting vessels engaged in unreported fishing activities in protected marine areas. Global Forest Watch, operated by the World Resources Institute, uses satellite data to track deforestation in near-real time, providing evidence that has been used by governments and advocacy organizations to document environmental crimes. SkyTruth, a nonprofit remote sensing organization, has used commercial imagery to document oil spills, illegal mining operations, and other environmental harms.
Financial intelligence represents another large market. Hedge funds and investment banks have for years used commercial satellite imagery to count cars in retail parking lots, measure crude oil inventory in storage tanks by analyzing the shadows cast by floating tank roofs, and monitor the construction pace of manufacturing facilities. The Quandl platform, now part of Nasdaq, built a data business around exactly this kind of alternative data derived from satellite imagery. This use is legal, financially motivated, and largely invisible to the retail investors and businesses that are being monitored.
The defense and intelligence market is substantial. The U.S. National Geospatial-Intelligence Agency and National Reconnaissance Office have both shifted portions of their imagery acquisition to commercial sources, partly to control costs and partly to allow commercial companies to take risks with new constellations that government programs would find difficult to justify. The Commercial SmallSat Data Acquisition program and similar government data licensing arrangements mean that commercial constellations are effectively performing intelligence collection on behalf of state actors, though the imagery is collected under commercial licenses rather than classified government mandates.
Repressive governments represent the most ethically fraught customer category. Commercial imagery has been used by researchers and journalists to document alleged abuses, including reporting by BuzzFeed News that used Maxar satellite imagery to document mass graves in Xinjiang, China, and OSINT researchers who have used commercial imagery to track North Korean missile activities, Russian military deployments, and the movements of ships potentially involved in sanctions evasion. But the same imagery products available to researchers and journalists are also available to governments seeking to monitor political dissidents, religious minorities, or ethnic communities, without those observed populations having any knowledge or legal recourse.
The Responsible Use Frameworks and Their Limits
Several commercial imagery providers have adopted voluntary responsible use policies that attempt to draw ethical lines around certain applications.
Planet Labs publishes a Responsible Use Policy that prohibits use of its imagery to enable human rights violations, facilitate illegal activities, support targeted surveillance of individuals, or enable activities that violate international law. The policy describes an internal review process for sensitive customer requests. What the policy cannot do is prevent imagery collected for one purpose from being repurposed for another, or ensure that all downstream uses by customers and their own clients comply with its terms.
Maxar Technologies has similarly published responsible use standards and maintains an intelligence team that reviews potentially sensitive requests. The company’s 30-centimeter imagery is classified as controlled in some distribution contexts, meaning it cannot be sold internationally without review. Airbus has established ethical guidelines for its Earth observation data, including restrictions on imagery over certain types of facilities.
The voluntary nature of these frameworks creates obvious weaknesses. Companies that adopt strong responsible use policies face a competitive disadvantage if customers can obtain similar data from operators with weaker standards. There is no independent auditing of responsible use commitments. The people most affected by surveillance, those whose homes, movements, and gatherings are being imaged, have no voice in drafting the policies and no mechanism for complaint if they are violated.
This is a structural problem. The current ethical architecture of the commercial Earth observation industry is built around producer-side commitments by companies that have every financial incentive to expand their customer base. Consumer-side protections, the legal rights of individuals who are observed, remain almost entirely absent.
The Persistent Monitoring Problem
Single images are one thing. Persistent monitoring of the same location over time is another, and it raises distinct ethical concerns.
HawkEye 360, which operates a constellation focused on radio frequency signal detection rather than optical imaging, can track the location and activity of vessels, vehicles, and communications devices anywhere on Earth without optical imagery. Spire Global operates a multi-sensor constellation that includes GNSS radio occultation, AIS tracking, and weather monitoring. Umbra Space operates SAR satellites that can detect centimeter-scale changes in ground features, enabling the detection of underground tunneling or the slow movement of structural foundations.
When these data streams are combined, the result is a surveillance capability that exceeds what any single type of sensor can provide. A company that combines optical imagery with RF signal detection, SAR change detection, and AIS vessel tracking can build a detailed pattern-of-life analysis for almost any geographic area or mobile target. This is valuable for counter-narcotics operations, port security monitoring, and national security intelligence. It is also, in principle, a system that could be used to monitor the activities of peaceful political movements, religious congregations, or labor organizers in ways that would have seemed fantastical to civil liberties advocates two decades ago.
The aggregation problem, the way that combining individually innocuous data creates privacy violations more serious than any single data point, is a recognized challenge in terrestrial privacy law. The Privacy Act of 1974 and its successors attempted to limit the aggregation of government-held personal information. The FTC’s work on data brokers has documented the privacy implications of commercial data aggregation. But neither framework addresses satellite-derived data, which is collected from space and therefore outside the jurisdictional assumptions of domestic privacy law.
International Human Rights Frameworks
While domestic privacy law has largely failed to address satellite surveillance, international human rights frameworks offer more relevant principles, even if their enforcement mechanisms are limited.
Article 12 of the Universal Declaration of Human Rights protects against arbitrary interference with privacy, family, home, and correspondence. Article 17 of the International Covenant on Civil and Political Rights, which is legally binding on its 173 state parties, guarantees the same right and requires states to enact legal protections against such interference.
UN Special Rapporteur on the right to privacy Joseph Cannataci has written extensively about the challenge of extending privacy rights into the digital age, including the challenge posed by surveillance technologies that operate from outside national territory. The core argument is that the right to privacy does not disappear when the surveillance is conducted from orbit, and that states have obligations to protect their citizens from satellite-based surveillance by both government and commercial actors.
The challenge is that the UN framework relies on state enforcement. A government that uses commercial satellite imagery to monitor its own population is unlikely to enforce privacy rights against that use. International enforcement mechanisms for human rights violations related to surveillance are limited, slow, and often politically blocked by the states most responsible for the violations.
Setting Meaningful Limits
The practical question is what a meaningful ethical framework for commercial Earth observation would look like, given the technical realities and the commercial pressures involved.
A serious framework would need to address at least three distinct issues. The first is individual privacy, requiring that commercial imagery capable of identifying specific individuals be subject to use restrictions comparable to those governing other forms of personal data. The second is state surveillance, requiring that commercial imagery providers conduct due diligence on government customers and decline to enable mass surveillance programs that target protected groups. The third is aggregation, requiring that the combination of satellite data streams into persistent monitoring capabilities be subject to some form of oversight that does not currently exist.
Some academics working in the field of geospatial privacy have proposed extending privacy impact assessment requirements to commercial remote sensing products, similar to the data protection impact assessments required under GDPR for high-risk data processing activities. Others have proposed an international certification framework for responsible remote sensing, potentially administered through the Group on Earth Observations, an intergovernmental body with 113 member governments.
What’s less certain is whether either approach would be adopted quickly enough to matter. The commercial remote sensing sector is growing faster than the regulatory frameworks governing it. Resolution is improving, revisit rates are increasing, and the cost of collecting and processing imagery is declining. The ethical gap between what the technology can do and what the governance frameworks permit or prohibit is widening, not narrowing.
Summary
Commercial Earth observation has created an unprecedented global surveillance capability that operates largely outside the legal frameworks designed to protect individual privacy. The industry’s voluntary responsible use frameworks are genuine efforts but inadequate to the scale of the challenge. Domestic privacy law was not designed for satellite surveillance, and international human rights frameworks have limited enforcement mechanisms. The aggregation of satellite data streams into persistent monitoring capabilities represents a qualitatively new privacy threat that regulatory thinking has not yet fully confronted. The ethical limits of commercial Earth observation are not defined by technical capability. They need to be defined by deliberate ethical choice and enforceable legal standards.
Appendix: Top 10 Questions Answered in This Article
What resolution is commercially available from Earth observation satellites?
Commercial imaging satellites from Maxar Technologies and Airbus can collect imagery at 30-centimeter resolution. At this resolution, individual vehicles and, in some contexts, individual people can be identified. Synthetic aperture radar satellites from companies like Capella Space and ICEYE collect data through clouds and at night.
Is it legal to photograph private property from a commercial satellite?
In most jurisdictions, including the United States, there is no established legal prohibition on imaging private property from orbit. Courts have historically interpreted the absence of a reasonable expectation of privacy from above-ground public vantage points as applying to aerial and satellite imagery, though this case law predates modern high-resolution commercial constellations.
What are the main categories of commercial Earth observation customers?
Customers include environmental monitoring organizations, financial intelligence firms, government defense and intelligence agencies, media and journalism organizations, and commercial businesses engaged in logistics, agriculture, and infrastructure monitoring. Repressive governments represent a troubling customer category for human rights reasons.
What is Planet Labs’ Responsible Use Policy?
Planet Labs publishes a policy prohibiting use of its imagery to enable human rights violations, support targeted individual surveillance, or facilitate illegal activities. The policy includes an internal review process for sensitive requests but relies on customer compliance and cannot prevent imagery from being repurposed after sale.
How does the GDPR apply to satellite imagery?
The EU’s General Data Protection Regulation applies to personal data about identifiable individuals, and it has potential relevance to satellite imagery that could identify specific people. However, European data protection authorities have not issued definitive guidance on whether commercial remote sensing falls under GDPR, leaving a significant interpretive gap.
What is the aggregation problem in satellite surveillance?
The aggregation problem refers to the way that combining individually innocuous data sources, such as optical imagery, radio frequency signal detection, and AIS tracking, can create a surveillance capability more privacy-invasive than any single source. Combined data streams enable persistent pattern-of-life monitoring that raises distinct ethical concerns beyond single-image collection.
What international human rights frameworks address satellite privacy?
Article 12 of the Universal Declaration of Human Rights and Article 17 of the International Covenant on Civil and Political Rights both protect against arbitrary interference with privacy. UN Special Rapporteur Joseph Cannataci has argued that these rights apply to satellite surveillance and that states have obligations to protect citizens from commercial satellite-based monitoring.
How is commercial satellite imagery used for environmental monitoring?
Organizations including Global Fishing Watch, Global Forest Watch, and SkyTruth use commercial satellite data to track illegal fishing, deforestation, oil spills, and illegal mining. These applications demonstrate the positive potential of commercial Earth observation while the same data products are available for harmful surveillance purposes.
What regulatory proposals exist for governing commercial remote sensing ethics?
Proposals include extending privacy impact assessment requirements to remote sensing products, developing an international certification framework for responsible remote sensing, and requiring commercial imagery providers to conduct due diligence on government customers to prevent enabling mass surveillance programs targeting protected groups.
What is synthetic aperture radar surveillance and why does it matter ethically?
Synthetic aperture radar satellites collect data using radar waves rather than light, enabling collection through cloud cover and at night. They can detect centimeter-scale changes in ground features, revealing underground construction or structural movement. This capability extends satellite surveillance into conditions where optical imaging cannot operate, reducing the environmental factors that previously limited persistent monitoring.
