SOFTWARE ACQUISITION
Hot-start information allows the precision-guided munition to more rapidly see and hear GPS signals after launch and help in determining if those signals are truth or spoofed signals.
NEW CODE
After decades of using P(Y)-code GPS signals, precision-guided munitions are migrating to a new, enhanced military GPS signal called M-code. (Photo by Spc. Zachary Burke, 55th Combat Camera)
Network-Assisted Assured Positioning, Navigation, and Timing (NA2) is being developed to provide this new M-code GPS satellite hot-start data to new M-code based precision-guided munitions.
JPEO A&A’s new prototype NA2 capability provides automated worldwide distribution of an expanded set of assured positioning, navigation and timing (A-PNT) hot-start data needed by preci- sion-guided munitions (such as M-code GPS information) and directly supports the top Army modernization imperatives under the auspices of the Army’s A-PNT/Space Cross-Functional Team.
During the Project Convergence 2021-related M-code live- fire developmental test, four successful prototype M-code GPS Precision Guidance Kit (PGK) guide-to-hit fire missions were executed—two each with M777A2 and M109A7. M-Code GPS satellite hot-start data was provided by NA2. All four PGKs used this data to acquire and track the M-code GPS signals and guide to the intended target. Tese successes were verified using telem- etry data captured in-flight.
CONCLUSION Tis M-code live-fire developmental test has been subsequently documented in a recently issued final test report by JPEO A&A. Te results of the M-code live-fire developmental test verified that
hot-start M-code GPS satellite data can be digitally disseminated across the fires network to the weapon system which, in turn, use this data to execute precision-guided munition fire missions.
Tis was the first-ever live-fire guide-to-hit demonstration using network-provided hot start M-code GPS satellite data to execute precision-guided munition fire missions. JPEO A&A’s NA2 proto- type system-of-systems capability enables warfighters to execute precision-guided munition fire missions in vertical-terrain-chal- lenging and GPS-contested environments.
For more information, contact Becky Gilbert at JPEO A&A Public Affairs at
rebecca.s.leonard3.ctr@army.mil.
PAUL MANZ serves as chief technology officer for JPEO A&A at Picatinny Arsenal. He is a Lean Six Sigma Black Belt, a senior member of the Institute of Electrical and Electronics Engineers (IEEE) and a recipient of the Ancient Order of Saint Barbara. He has been honored for his work by the National Defense Industrial Association, IEEE and DOD. To learn more about his work, including papers and patents, go to https://orcid. org/0000-0001-5644-9892. His work has appeared most recently in Army AL&T in the Spring 2017 issue. (See “Need a LFT?”)
THOMAS BLENK serves as the director of Assured Precision Weapons and Munitions under JPEO A&A at Picatinny Arsenal. He has more than 10 years of navigation experience and made significant contributions to various precision-guided munition and weapon programs, and he is currently pursuing his doctorate in electrical engineering from Stevens Institute of Technology.
https://asc.ar my.mil
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