How Satellite Surveillance Works and What the Law Says

Satellite surveillance laws in the United States sit in two separate buckets: a federal licensing regime that controls what private companies can do with imaging satellites, and a body of Fourth Amendment case law that shapes what the government can do with the images. Commercial operators are licensed by the Secretary of Commerce under the Land Remote Sensing Policy Act, with day-to-day administration handled by NOAA’s Office of Space Commerce. Government surveillance from orbit has never been directly ruled on by the Supreme Court, but the aerial-observation and location-tracking cases give a workable map of where the constitutional limits probably fall.

Who Needs a License to Operate an Imaging Satellite

No person under U.S. jurisdiction can operate a private remote sensing satellite system without a federal license.¹ The statutory foundation is the Land Remote Sensing Policy Act, codified at 51 U.S.C. § 60101 and following sections, which gives the Secretary of Commerce authority to license private operators in consultation with other agencies.² The regulations live at 15 CFR Part 960, and the Office of Space Commerce within NOAA runs the process.³

Applications move on a defined schedule. After an applicant submits a complete package of technical and operational information, the government has seven days to check completeness and up to 60 days after that to process the application.³ The statute separately requires a final determination within 120 days, and if the agency hasn’t acted by then it must tell the applicant what’s still outstanding.² Once licensed, operators have to give the Secretary complete orbit and data-collection information and immediately report any deviations.¹

Foreign investment in a U.S. satellite-imagery company can trigger a separate review by the Committee on Foreign Investment in the United States. CFIUS has authority under Section 721 of the Defense Production Act to review transactions where a foreign person acquires control of a U.S. business that produces critical technologies, a category that includes systems covered by export controls.⁴

How the Three-Tier System Decides What Restrictions Apply

The heart of the licensing regime is a tier assignment that the Secretary makes within seven days of deeming an application complete, after consulting with the Departments of Defense and State as needed.⁵ The tier is determined by how the satellite’s capabilities compare to what’s already on the global market:

Tier 1 covers systems that collect data substantially the same as what foreign or unlicensed operators already offer. They face the lightest burden and only standard license conditions.
Tier 2 covers systems whose capabilities match those of other U.S.-licensed operators but that foreign operators don’t yet offer. Tier 2 licensees must comply with limited-operations directives and face restrictions on imaging other satellites in orbit.
Tier 3 covers systems collecting data no domestic or foreign operator currently offers. These carry the heaviest restrictions, including temporary conditions that the Secretary of Defense has to re-validate every year.

The logic is competitiveness against security. If a foreign company already sells a given kind of imagery, restricting a U.S. firm from selling it does little for national security and much for the foreign competitor.

When the Government Can Order a Commercial Operator to Stop Imaging

The regulations give the government authority to temporarily halt collection or distribution of imagery through what they call limited-operations directives. These apply only to Tier 2 and Tier 3 systems. A directive requires a formal determination by the Secretary of Defense or the Secretary of State that specific national security interests, international obligations, or foreign policy concerns are at risk. The requesting official has to describe the specific interests, explain why the satellite’s operation as proposed would compromise them, and specify the conditions needed to protect them.⁶

In practice, the trend has been toward loosening. In July 2023, NOAA removed 39 individual temporary conditions from Tier 3 licenses, cutting global imaging restrictions to less than 1% of Earth’s surface. A small number of Tier 3 conditions were kept at the request of the Secretary of Defense, subject to annual re-validation.⁷

One geographic restriction persists in modified form. Under the Kyl-Bingaman Amendment, U.S.-licensed commercial satellites cannot distribute imagery of Israel above a set resolution. Originally set at 2 meters GSD, the limit was relaxed to 0.4 meters in 2020, and it applies regardless of what the satellite is technically capable of.⁸

Constitutional Limits on Government Satellite Surveillance

The Supreme Court has not directly decided whether government satellite surveillance is a Fourth Amendment search. The working framework comes from Katz v. United States (1967), which set the standard two-part test: a person must have an actual, subjective expectation of privacy, and that expectation must be one society recognizes as reasonable. Katz also noted that what a person “knowingly exposes to the public” gets no Fourth Amendment protection, even from inside a home.⁹

Two aerial-observation cases from the 1980s applied Katz to overhead surveillance. In California v. Ciraolo (1986), the Court held that police flying at 1,000 feet in public airways did not need a warrant to see a backyard marijuana garden visible to the naked eye.¹⁰ Three years later, Florida v. Riley extended that reasoning to helicopter observation at 400 feet, on the theory that any member of the public could legally fly at that altitude and see the same thing.¹¹ Satellite observation, hundreds of miles up and far less intrusive than a helicopter overhead, sits at the extreme end of that logic.

More recent cases pull the other way. In United States v. Jones (2012), the Court held that attaching a GPS tracker to a vehicle and monitoring it over an extended period was a Fourth Amendment search.¹² In Carpenter v. United States (2018), the Court required a warrant for historical cell-site location records, reasoning that the comprehensive nature of the data made it a search even though the person had shared each individual data point with a carrier.¹³

The Mosaic Theory

Concurring opinions in Jones sketched what scholars call the mosaic theory: individual observations that are each legal on their own can add up to an unconstitutional search when combined into a comprehensive surveillance picture. One snapshot of a car at an intersection is nothing. A month of every intersection that car passed through is something else.

This matters for satellite surveillance because commercial constellations increasingly enable persistent monitoring. Any single overhead image looks a lot like Ciraolo. Weeks or months of stitched-together location data on one person looks a lot more like Carpenter. Courts have not yet drawn a satellite-specific line, but the direction of recent decisions suggests that persistent satellite tracking of an individual would face serious constitutional scrutiny even where a one-off image would not.

Penalties and Ongoing Obligations for Licensees

Operating without a license, or outside the terms of one, can bring civil penalties of up to $10,000 per violation, with each day of noncompliant operation counting as a separate offense.¹⁴ A year of noncompliance could accumulate over $3.6 million in penalties.p>

The Secretary can also go to federal court for an injunction to suspend or terminate a license and immediately halt operations if a licensee has substantially failed to comply with the statute, license conditions, or U.S. international obligations. The government has authority to issue subpoenas for records and testimony and, with a warrant based on probable cause, to seize materials used in violation of the licensing rules. A licensee facing adverse action can request an on-the-record agency hearing, and final agency decisions are subject to judicial review in federal court.¹⁴

Licensees carry ongoing obligations beyond their technical parameters. They have to notify the Secretary of any significant agreement with a foreign nation or foreign entity, make imagery of any country’s territory available to that country’s government on reasonable terms, and properly dispose of their satellites at the end of operations.¹

Using Satellite Imagery as Evidence in Court

Satellite imagery shows up in civil and criminal litigation, and two evidentiary hurdles typically decide whether it comes in. Authentication under Federal Rule of Evidence 901 generally requires showing the imagery is what it claims to be. Courts have accepted it where a witness with personal knowledge confirms the scene, or where the proponent shows the system reliably produces accurate images. Courts have been more skeptical when a party cannot establish when an image was taken or that the date stamps are reliable. New York and Florida have enacted statutes addressing judicial notice of satellite-platform imagery, with an advance-notice requirement to the opposing party.

On hearsay, imagery produced as part of a company’s regular operations may qualify for the business-records exception under Rule 803(6), provided a custodian or qualified witness can attest that the data was collected at or near the time of the event, kept in the ordinary course of business, and produced through a regular practice. Government-generated satellite data may separately qualify under the public-records exception in Rule 803(8), which covers factual findings from legally authorized investigations.¹⁵ Either way, the opposing side can attack the evidence by showing the source or methodology is untrustworthy.

What the Law Does Not Have to Worry About

Some fears about satellite surveillance don’t require legal restraint because physics already provides it. Commercial satellites cannot read license plates or recognize faces from orbit. Atmospheric distortion and the diffraction limit, which ties achievable resolution to the size of the camera’s aperture, impose hard constraints on what any sensor can resolve from hundreds of miles up. The best commercially available electro-optical imagery currently achieves roughly 25-centimeter native resolution, meaning each pixel covers a 25-centimeter square. You can tell a car from a truck. You cannot make out a person’s features or read text. SAR satellites have reached finer nominal resolutions, with a 16-centimeter spotlight image from Umbra recorded as the highest-resolution commercial satellite image publicly released, but radar imagery reveals surface texture and material composition rather than visual detail.¹⁶ Continuous real-time video surveillance of a single person from orbit is not currently possible with commercial technology, which is one reason the constitutional questions above still involve snapshots and stitched-together tracks rather than live feeds.

1
Office of the Law Revision Counsel. 51 USC 60122 – Conditions for Operation
2
Office of the Law Revision Counsel. 51 USC 60121 – General Licensing Authority
3
Office of Space Commerce. Licensing
4
U.S. Department of the Treasury. CFIUS Frequently Asked Questions
5
eCFR. 15 CFR Part 960 – Licensing of Private Remote Sensing Space Systems
6
Federal Register. Licensing of Private Remote Sensing Space Systems
7
Office of Space Commerce. NOAA Eliminates Restrictive Operating Conditions From Commercial Remote Sensing Satellite Licenses
8
Office of Space Commerce. New Limits on Satellite Imaging of Israel
9
Justia. Katz v United States, 389 US 347 (1967)
10
Justia. California v Ciraolo, 476 US 207 (1986)
11
Library of Congress. Florida v Riley, 488 US 445 (1989)
12
Justia. United States v Jones, 565 US 400 (2012)
13
Supreme Court of the United States. Carpenter v United States, 585 US (2018)
14
Office of the Law Revision Counsel. 51 USC 60123 – Administrative Authority of Secretary
15
Cornell Law School. Federal Rules of Evidence Rule 803 – Exceptions to the Rule Against Hearsay
16
Umbra. Umbra Releases Highest Resolution Commercial Satellite Image