The weather research community is utilizing a proven RO technique for climate modeling and numerical weather prediction; however, the current space hardware does not provide the optimum science data. This proposal will focus on proposed enhancements to the Integrated GPS Occulation Receiver (IGORTM) L1/L2 GPS flight receivers. * Improvement in real time Navigation Solution from <3 meter RMS navigation solution accuracies to <10cm RMS accuracies; * Addition of new GPS L5 frequency & L2C Signal processing * Addition of proposed Galileo frequencies and correlators * Addition of capability for real-time corrections via TDRSS or equivalent * Upgrade of hardware to improve radiation tolerance * Provision of extensible GPS science mission capability * Improvements in precision orbit determination capability The upgrade technology will result in improving the global weather and climate data set by increasing the number of global soundings (including tropospheric) with improved resolutions and higher spatial concentrations. SUMMARY OF
Anticipated Results: Results from Phase I will lead to decisions of which functionality should be added to our existing RO receiver hardware including L2C, L5 frequency utility, and Galileo and GLONASS frequencies. The significance of the successful Phase I results in relation to Phase II is that the prototype GPS avionics receiver functionality will be demonstrated through an engineering model. After successful verification of technical objectives, flight receiver builds can be considered for Phase II space or commercial applications. This process will reduce the on-recurring costs for basic avionics as well as simplifying the Integration and Test phases of spacecraft development and manufacturing
