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<h1>Advanced Navigation Systems</h1>
<p>
CRS is heavily involved with, and actively supports, research and development in advanced navigational systems. The R&D efforts stem from our long experiences and strong backgrounds in radio engineering, particularly in the use of software radio in navigational system design and development.
<br><br>
CRS is involved with several innovative R&D programs using current and modernized GPS systems. The programs involve improved precision, M-code systems, precise wavefront simulators for high dynamics, multipath reduction, anti-jam receivers, pseudolites, direct P(Y) code acquisition, YMCA receivers, interoperability between Galileo and GPS, selective denial, anti-spoofing, block processing, various coupling schemes between GPS/INS, and RTK processing.
<br><br>
CRS also supports various activities for end-to-end simulation of complex scenarios, such as those involved in JPALS (Joint Precision Approach & Loading System) and global ionospheric modeling.
<br><br>
CRS�s antenna group has designed and developed some pioneering antennas covering GPS and cellular bands. They are currently active in designing novel A/J antennas.
<br><br>
CRS has a strong history in space weather research, especially involving GPS in ionospheric and tropospheric investigations. Several new techniques and receivers have been developed for monitoring and mitigating these environmental effects. CRS�s research also spans the use of GPS in obtaining a global image of the ionosphere.
<br><br>
Much of this high-end system research has resulted in innovative products, several of which can be readily transitioned to advanced products.
<br><br>
CRS supports most of the organizations involved with advanced navigational systems. These include: Wright-Patterson AFB, Eglin AFB, Hanscom AFB, Edwards AFB, LA AFB, SPAWAR, China Lake, U.S. Army ARDEC and CECOM, Pax-River, NRL, Aerospace Corporation, ARINC, Rockwell-Collins, L-3 IEC, ITT, and others in the US and abroad.
<br><br>
CRS has a strong group of scientists, engineers, and technicians, dedicated to advancing the state of navigational technologies. These involve GPS, Galileo, several SBAs, and other signals of opportunity, such as those involving radio, radar, TV, or cell phone signals.
<br><br>
The span of expertise at CRS covers all the disciplines involved in developing advanced systems. These include electromagnetic and antenna engineering, RF engineering, digital engineering, signal processing, DSP and FPGA experience, software engineering, system engineering, physics, and mathematics. CRS supports these diverse talents under one roof. This provides us with the cutting edge in R&D and lets us advance the state of navigational technologies.
<h3>We are currently supporting advanced navigational system developments</h3>
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Block Processing - Wright Patterson AFB</li>
<li>UTC - Wright Patterson AFB</li>
<li>Pseudolites - U.S. Army (ARDEC)</li>
<li>TSPI Receiver - Edwards AFB</li>
<li>Direct Y-code - U.S. Army (CECOM)</li>
<li>Space-borne - Office of Naval Research</li>
<li>Multipath - Wright Patterson AFB</li>
<li> YMCA++ - SPAWAR</li>
<li>HWIL Simulator - Missile Defense Agency</li>
<li>Wavefront Simulator - Holloman AFB</li>
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