MIL-M-8555C
3.9.1 Guidance subsystem. The guidance subsystem is the missile
subsystem that receives and processes information from the target, the weapon
control system, and other sources in order to determine steering signals that
are applied to the stabilization subsystem. Performance, physical
characteristics and parameters, when applicable, shall be specified as follows:
Physical characteristics
a.
(1) Type.
(2) Size and shape.
(3) Weight.
b.
Performance
(1) R90 detection range (specified as a function of closing rate
and scan rate).
(R90 is the range for which there is a 90 percent probability
of detecting the target.)
(2) T90. tracking range (specified as a function of closing rate and
scan rate, if appropriate).
(T90 is the range for which there Is a 90 percent probability
of obtaining a valid target track.)
(3) Angle resolution and accuracy.
(4) Range rate resolution gating and accuracy.
(5) Range resolution and accuracy.
(6) Sub-clutter visibility (ie, performance in a clutter
environment depicted in terms of items (1) to (5) above).
(7) Performance in an electronic countermeasures (ECM) environment,
depicted in terms of items (1) to (5) above. Performance in an
ECM environment shall be related to threat capabilities.
(8) Beam aspect tracking capability.
(9) Line-of-sight tracking limits.
3.9.1.1 Radome(s). The following parameters and characteristics of each
radome contained in the missile shall be specified:
Physical characteristics
a.
(1) Type of radome.
(2) Size and shape
(3) Height.
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