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CEAS EuroGNC 2019

Improved Instrument Misalignment Equations for Image Navigation and Registration (INR)
Ahmed Aly Kamel Kamel Engineering Services, Los Angeles, USA
Abstract:
Improved misalignment equations are presented for instruments with single scanning mirror and instruments with two scanning mirrors. The improved misalignment equations are derived using Snell's law and Householder transformation. The nominal optical path without misalignments shows that focal plane module reflected image by single mirror rotates by the north-south angle while it does not rotate for two mirrors. The optical path with misalignment of focal plane module to scanner mirror and misalignments within scanner assembly show that the state vector can be represented by six angles for single mirror instruments and by four angles for two mirror instruments. The state vector most significant improvement represents the effect of scan mirror axes orthogonality misalignment angle due to thermal variation and measurement errors. This improvement is shown to be in the north-south direction and equals to the orthogonality misalignment angle multiplied by the tangent of the east-west scan angle.
Keywords: Navigation; Optimization; Sensor systems
 View PDF CEAS-GNC-2019-022


Ahmed Aly Kamel: Improved Instrument Misalignment Equations for Image Navigation and Registration (INR). Proceedings of the 2019 CEAS EuroGNC conference. Milan, Italy. April 2019. CEAS-GNC-2019-022.
BibTeX entry:

@Incollection{CEAS-GNC-2019-022,
    authors = {Kamel, Ahmed Aly},
    title = {Improved Instrument Misalignment Equations for Image Navigation and Registration ({INR})},
    booktitle = {Proceedings of the 2019 {CEAS EuroGNC} conference},
    address = {Milan, Italy},
    month = apr,
    year = {2019},
    note = {CEAS-GNC-2019-022}
}