Graphics Programs Reference
In-Depth Information
v
2
K
2
2
t
2
K
+
K
τ
1
K
+
K
τ
1
t
L
s
==
------
1
2
-------------
+
-------------
The average power loss is then
τ 2
⁄
∫
2
t
2
2
---
12
K
+
K
τ
1
K
+
K
τ
1
t
L
s
=
-------------
+
-------------
d
0
)
2
K
+
2
K
1
(
K
+
1
=
1
-------------
+
--------------------
12
K
2
and, for example, if
, then
.
K
=
15
L
s
=
2.5
dB
e. Doppler Filter Straddle:
Doppler filter straddle is similar to range gate straddle. However, in this case
the Doppler filter spectrum is spread (widened) due to weighting functions.
Weighting functions are normally used to reduce the sidelobe levels. Since the
target Doppler frequency can fall anywhere between two Doppler filters, signal
loss occurs.
1.8.6. Other Losses
Other losses may include equipment losses due to aging radar hardware,
matched filter loss, and antenna efficiency loss. Tracking radars suffer from
crossover (squint) loss.
1.9. ÐMyRadarÑ Design Case Study - Visit 1
In this section, a design case study, referred to as
ÐMyRadarÑ
design case
study, is introduced. For this purpose, only the theory introduced in this chapter
is used to fulfill the design requirements. Note that since only a limited amount
of information has been introduced in this chapter, the design process may
seem illogical to some readers. However, as new material is introduced in sub-
sequent chapters, the design requirements are updated and/or new design
requirements are introduced based on the particular material of that chapter.
Consequently, the design process will also be updated to accommodate the new
theory and techniques learned in that chapter.
1.9.1. Authors and Publisher Disclaimer
The design case study
ÐMyRadarÑ
is a ground based air defense radar
derived and based on BrooknerÓs
1
open literature source. However, the design
approach introduced in this topic is based on the authorsÓ point of view of how
to design such radar. Thus, the design process takes on a different flavor than
Search WWH ::
Custom Search