Finite Sampling Considerations for
GMTI STAP and Sensor Modeling
October 2005
T. P. Guella, The MITRE Corporation
B. N. Suresh Babu, The MITRE Corporation
ABSTRACT
The continuing objectives of Project 5518 are to develop and enhance the simulation capabilities for evaluating advanced modular sensor designs such as MP-RTIP and Global Hawk. The use of reduced subspace Space Time Adaptive Processing (STAP) architectures increases the probability of detection and improves the minimum detectable velocity (MDV). References [1, 2] discuss the details of earlier steady state performance evaluation for a Global Hawk weight compliant system using these architectures. This report will present the effects of finite sampling on system performance using the properties of the Wishart distribution and will present a method by which some of the finite sample losses may be recovered through subaperture processing to improve the performance.
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