仪表近进的分类

Precision approach (With glide slope, descend to DA)
ILS (Category I, II, IIIa, IIIb, IIIc)

Non-precision approach (No glide slope, descend to MDA)
VOR
NDB
VOR/DME
LOC (localizer approach = ILS – glide slope)
LDA (localizer directional aid)
Contact
Visual

Radar approaches: PAR, ASR

GPS approach
Approach chart Formats:
Basic GPS
GPS overlay
GPS standalone (Standard I, Standard T, Modified T, TAA)

Approach minimums:
With WAAS, satisfy HPL/VPL (precision approach)
LPV (glide slope, to DA)

With WAAS, NOT satisfy HPL/VPL (non-precision approach)
LP (no glide slope, to MDA) = LPV – glide slope
LNAV/VNAV (glideslope, to DA). Looks like LPV, however, its DA >> LNAV’s MDA
LNAV+V (glideslope, to MDA)

Without WAAS
LNAV (no glide slope, to MDA)

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