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- W2589341760 abstract "Global Positioning System (GPS) sensors have the potentialto provide precise position, velocity, and timing informationin high-dynamic applications. Missile flight-testing is onesuch application where accurate relative positions areimportant. GPS instrumentation can provide the highaccuracy while offering both significant cost savings andimproved confidence in the test results when compared to existing methods. To date, however, the use of GPS inmissile flight testing has been limited due, in part, to thelack of demonstrated GPS receiver tracking capability inhigh dynamics. Missile flight-test environments encompassa range of high dynamics characterized by supersonicvelocities, tens of g’s in acceleration, and jerk on the orderof hundreds of g’s per second.This paper evaluates several currently available GPSreceivers for both their tracking capability and theirmeasurement accuracy in high-dynamic environments. Theevaluation includes actual test results for rocket sled andcentrifuge experiments and several trajectory models run ona GPS satellite constellation simulator (SCS). Analysis ofthe SCS GPS data, collected by the same type receiver asused in the actual sled test, demonstrated accuratereproduction of both the receiver’s tracking loop phasemeasurement delay and corresponding position errors to thecentimeter level. Software simulation of the measurements,using the sled’s trajectory truth data as input, confirmed thetracking loop measurement errors. The SCS was further used to evaluate receiver trackingcapabilities for generic missile trajectories. These testsillustrate, among other results, the relationship betweentracking capability and various jerk levels and jerkdurations. Several receivers, with second and third ordertracking loops and specified bandwidth, were evaluated.The actual tests and SCS modeling are described. Thetracking capabilities and measurement accuracy arepresented for the test cases." @default.
- W2589341760 created "2017-03-03" @default.
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- W2589341760 date "2000-10-01" @default.
- W2589341760 modified "2023-09-28" @default.
- W2589341760 title "EVALUATION OF GPS RECEIVER PERFORMANCE UNDER HIGH DYNAMIC CONDITIONS" @default.
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