National Academies Press: OpenBook

The Global Positioning System: A Shared National Asset (1995)

Chapter: Anti-Jam and Anti-Spoof Capability

« Previous: Accuracy and Integrity
Suggested Citation:"Anti-Jam and Anti-Spoof Capability." National Research Council. 1995. The Global Positioning System: A Shared National Asset. Washington, DC: The National Academies Press. doi: 10.17226/4920.
Page 25

Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

GPS APPLICATIONS AND REQUIREMENTS 25 Table 2-3 Military Land Applications and Requirementsa Application Accuracy Resistance to RF Interference Chemical Warfare 100.0 m CEP High Engineer Mine Neutralization 100.0 m CEP High Mine Dispensing & Gap Crossing 50.0m CEP High Field Artillery MLRS 20.0 m CEP High Howitzer 175 m CEP High Mortars 50.0 m CEP High Fist-V & Forward Observer 30.0 m CEP High Artillery and Mortar Radar 10.0 m CEP High Infantry & Armorb 100.0 m CEP High Missile Munitions 93.0 m CEP High Signal 15.0 m CEP High Special Operations Forces 30.0 m CEP High Intelligence Electronic Warfare 20.0 m CEP High Ordnance 84.0 m CEP High Air Defense Artillery Patriot 10.0 m CEP High Hawk 40.0 m CEP High a. Availability, integrity, and continuity of service requirements are not specified for military land transportation applications. b. The Infantry & Armor category also includes transportation, soldier support, military police, and quartermaster. Anti-Jam and Anti-Spoof Capability Although the "Resistance to RF Interference" column in Tables 2-1 through 2-3 does not include quantitative values, a high level of resistance to RF interference is a critical requirement for most military applications.10 For the military, the primary interference concerns are deliberate jamming and spoofing by an adversary or by our own forces. In future conflicts, a potential enemy also will be utilizing the capabilities of GPS and DGPS against U.S. and allied military forces. In order to deny this use, friendly forces must have the ability to eliminate an adversary's use of GPS signals without impacting the effectiveness of their own user equipment. This dictates that military GPS receivers also must be capable of continued operation in an environment populated with both U.S. and enemy jammers. Therefore, GPS-based navigation systems used on aircraft, ships, land vehicles, and precision-guided munitions must possess one or more of the following capabilities: 10 Quantifiable values for resistance to RF interference are given in decibels (dB), and relate to the ratio of jammer power to signal power (J/S). These values are very specific to a given mission and operational environment, making a generic J/S requirement for a given application difficult to determine.

The Global Positioning System: A Shared National Asset Get This Book
Buy Paperback | $61.00 Buy Ebook | $48.99
MyNAP members save 10% online.
Login or Register to save!
Download Free PDF

The Global Positioning System (GPS) is a satellite-based navigation system that was originally designed for the U.S. military. However, the number of civilian GPS users now exceeds the military users, and many commercial markets have emerged. This book identifies technical improvements that would enhance military, civilian, and commercial use of the GPS. Several technical improvements are recommended that could be made to enhance the overall system performance.

  1. ×

    Welcome to OpenBook!

    You're looking at OpenBook,'s online reading room since 1999. Based on feedback from you, our users, we've made some improvements that make it easier than ever to read thousands of publications on our website.

    Do you want to take a quick tour of the OpenBook's features?

    No Thanks Take a Tour »
  2. ×

    Show this book's table of contents, where you can jump to any chapter by name.

    « Back Next »
  3. ×

    ...or use these buttons to go back to the previous chapter or skip to the next one.

    « Back Next »
  4. ×

    Jump up to the previous page or down to the next one. Also, you can type in a page number and press Enter to go directly to that page in the book.

    « Back Next »
  5. ×

    To search the entire text of this book, type in your search term here and press Enter.

    « Back Next »
  6. ×

    Share a link to this book page on your preferred social network or via email.

    « Back Next »
  7. ×

    View our suggested citation for this chapter.

    « Back Next »
  8. ×

    Ready to take your reading offline? Click here to buy this book in print or download it as a free PDF, if available.

    « Back Next »
Stay Connected!