Hover over a satellite to see its details.
@@ -226,8 +226,8 @@ function showInfo(o) {
FSPL${o.fsplDb}
Coverage${o.coverage}
-
โ
Pros${o.pros}
-
โ ๏ธ Cons${o.cons}
+
Pros${o.pros}
+
Cons${o.cons}
Examples${o.examples}
`;
@@ -489,7 +489,7 @@ draw();
def render():
"""Render the GEO/MEO/LEO orbit comparison animation."""
- st.markdown("## ๐ Satellite Orbits โ GEO vs MEO vs LEO")
+ st.markdown("## Satellite Orbits โ GEO vs MEO vs LEO")
st.markdown(
"Compare the three main satellite orbit types. "
"Hover over satellites or legend items to explore their characteristics."
@@ -500,50 +500,50 @@ def render():
# โโ Educational content below โโ
st.divider()
- st.markdown("### ๐ Orbit Comparison at a Glance")
+ st.markdown("### Orbit Comparison at a Glance")
col1, col2, col3 = st.columns(3)
with col1:
st.markdown("""
-#### ๐ข LEO โ Low Earth Orbit
+#### LEO โ Low Earth Orbit
**160 โ 2 000 km**
-- โก Latency: **4 โ 20 ms** (RTT)
-- ๐ FSPL: ~155 dB (Ku-band)
-- ๐ Period: ~90 โ 120 min
-- ๐ก Small footprint โ **large constellations** needed (hundreds to thousands)
-- ๐ค Requires **handover** between satellites
-- ๐ฐ๏ธ *Starlink (550 km), OneWeb (1 200 km), Iridium (780 km)*
+- Latency: **4 โ 20 ms** (RTT)
+- FSPL: ~155 dB (Ku-band)
+- Period: ~90 โ 120 min
+- Small footprint โ **large constellations** needed (hundreds to thousands)
+- Requires **handover** between satellites
+- *Starlink (550 km), OneWeb (1 200 km), Iridium (780 km)*
""")
with col2:
st.markdown("""
-#### ๐ก MEO โ Medium Earth Orbit
+#### MEO โ Medium Earth Orbit
**2 000 โ 35 786 km**
-- โก Latency: **40 โ 80 ms** (RTT)
-- ๐ FSPL: ~186 dB (Ku-band)
-- ๐ Period: ~2 โ 12 h
-- ๐ก Medium footprint โ **medium constellations** (20 โ 50 sats)
-- ๐ Good balance between coverage and latency
-- ๐ฐ๏ธ *GPS (20 200 km), Galileo, O3b/SES (8 000 km)*
+- Latency: **40 โ 80 ms** (RTT)
+- FSPL: ~186 dB (Ku-band)
+- Period: ~2 โ 12 h
+- Medium footprint โ **medium constellations** (20 โ 50 sats)
+- Good balance between coverage and latency
+- *GPS (20 200 km), Galileo, O3b/SES (8 000 km)*
""")
with col3:
st.markdown("""
-#### ๐ด GEO โ Geostationary Orbit
+#### GEO โ Geostationary Orbit
**35 786 km (fixed)**
-- โก Latency: **240 โ 280 ms** (RTT)
-- ๐ FSPL: ~205 dB (Ku-band)
-- ๐ Period: 23 h 56 min (= 1 sidereal day)
-- ๐ก Huge footprint โ **3 sats = global** coverage
-- ๐ **Fixed position** in the sky โ no tracking needed
-- ๐ฐ๏ธ *Intelsat, SES, Eutelsat, ViaSat*
+- Latency: **240 โ 280 ms** (RTT)
+- FSPL: ~205 dB (Ku-band)
+- Period: 23 h 56 min (= 1 sidereal day)
+- Huge footprint โ **3 sats = global** coverage
+- **Fixed position** in the sky โ no tracking needed
+- *Intelsat, SES, Eutelsat, ViaSat*
""")
- with st.expander("๐ฌ Key Trade-offs in Detail"):
+ with st.expander("Key Trade-offs in Detail"):
st.markdown(r"""
| Parameter | LEO | MEO | GEO |
|:---|:---:|:---:|:---:|
@@ -569,7 +569,7 @@ for the same bandwidth and transmit power. LEO compensates with lower FSPL
but requires more satellites and complex handover.
""")
- with st.expander("๐ฐ๏ธ Notable Constellations"):
+ with st.expander("Notable Constellations"):
st.markdown("""
| Constellation | Orbit | Altitude | # Satellites | Use Case |
|:---|:---:|:---:|:---:|:---|
diff --git a/views/real_world.py b/views/real_world.py
index 52465d8..a6336b6 100644
--- a/views/real_world.py
+++ b/views/real_world.py
@@ -159,21 +159,21 @@ def render():
with col_img:
st.image("Satellite.png", width=200)
with col_title:
- st.markdown("# ๐ฐ๏ธ Shannon & Friends in the Real World")
+ st.markdown("# Shannon & Friends in the Real World")
st.markdown("From theory to satellite communication link budget.")
wiki_cols = st.columns(4)
- wiki_cols[0].link_button("๐ Harry Nyquist", "https://en.wikipedia.org/wiki/Harry_Nyquist")
- wiki_cols[1].link_button("๐ Richard Hamming", "https://en.wikipedia.org/wiki/Richard_Hamming")
- wiki_cols[2].link_button("๐ Andrew Viterbi", "https://en.wikipedia.org/wiki/Andrew_Viterbi")
- wiki_cols[3].link_button("๐ Claude Berrou", "https://en.wikipedia.org/wiki/Claude_Berrou")
+ wiki_cols[0].link_button("Harry Nyquist", "https://en.wikipedia.org/wiki/Harry_Nyquist")
+ wiki_cols[1].link_button("Richard Hamming", "https://en.wikipedia.org/wiki/Richard_Hamming")
+ wiki_cols[2].link_button("Andrew Viterbi", "https://en.wikipedia.org/wiki/Andrew_Viterbi")
+ wiki_cols[3].link_button("Claude Berrou", "https://en.wikipedia.org/wiki/Claude_Berrou")
st.divider()
# โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
# SECTION 1: Satellite Link
# โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
- st.markdown("## ๐ก Satellite Link")
+ st.markdown("## Satellite Link")
col1, col2, col3 = st.columns(3)
with col1:
@@ -213,7 +213,7 @@ def render():
try:
sat_cir_list = [float(v.strip()) for v in sat_cir_input.split(",")]
except ValueError:
- st.error("โ Invalid C/I values.")
+ st.error("Invalid C/I values.")
return
# Compute satellite link
@@ -224,11 +224,11 @@ def render():
sat_alt, sat_lat, sat_lon, gs_lat, gs_lon, availability,
)
except Exception as e:
- st.error(f"โ Satellite link computation error: {e}")
+ st.error(f"Satellite link computation error: {e}")
return
# Display satellite link results
- st.markdown("#### ๐ Satellite Link Results")
+ st.markdown("#### Satellite Link Results")
r1, r2, r3 = st.columns(3)
r1.metric("Output Power", fmt_power(sat["sig_power"]), help=REAL_WORLD_HELP["output_power"])
r2.metric("Antenna Gain", fmt_gain(sat["sat_gain_linear"]), help=REAL_WORLD_HELP["sat_gain"])
@@ -245,14 +245,14 @@ def render():
st.metric("Power Flux Density", fmt_pfd(sat["pfd_linear"]), help=REAL_WORLD_HELP["pfd"])
if sat["elevation"] <= 0:
- st.warning("โ ๏ธ Satellite is below the horizon (negative elevation). Results may not be meaningful.")
+ st.warning("Satellite is below the horizon (negative elevation). Results may not be meaningful.")
st.divider()
# โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
# SECTION 2: Radio Front End
# โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
- st.markdown("## ๐ป Radio Front End")
+ st.markdown("## Radio Front End")
col_r1, col_r2 = st.columns(2)
with col_r1:
@@ -268,10 +268,10 @@ def render():
cpe_ant_d, cpe_t_clear,
)
except Exception as e:
- st.error(f"โ Receiver computation error: {e}")
+ st.error(f"Receiver computation error: {e}")
return
- st.markdown("#### ๐ Receiver Results")
+ st.markdown("#### Receiver Results")
rx1, rx2 = st.columns(2)
rx1.metric("Antenna Area ยท G/T", f"{rcv['cpe_ae']:.2f} mยฒ ยท {rcv['cpe_g_t']:.1f} dB/K",
help=REAL_WORLD_HELP["cpe_gain"])
@@ -290,7 +290,7 @@ def render():
# โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
# SECTION 3: Baseband Unit
# โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
- st.markdown("## ๐ป Baseband Unit")
+ st.markdown("## Baseband Unit")
col_b1, col_b2, col_b3 = st.columns(3)
with col_b1:
@@ -310,7 +310,7 @@ def render():
try:
cnr_imp_list = [float(v.strip()) for v in cir_input.split(",")]
except ValueError:
- st.error("โ Invalid C/I values.")
+ st.error("Invalid C/I values.")
return
try:
@@ -319,10 +319,10 @@ def render():
sat["sat_cir"], bandwidth, rolloff, overheads, cnr_imp_list, penalties,
)
except Exception as e:
- st.error(f"โ Baseband computation error: {e}")
+ st.error(f"Baseband computation error: {e}")
return
- st.markdown("#### ๐ Baseband Results")
+ st.markdown("#### Baseband Results")
b1, b2, b3 = st.columns(3)
b1.metric("SNR in Available BW", f"{bb['cnr_bw']:.1f} dB in {bandwidth:.1f} MHz",
@@ -336,7 +336,7 @@ def render():
b4, b5 = st.columns(2)
with b4:
- st.markdown("##### ๐ฏ Theoretical")
+ st.markdown("##### Theoretical")
st.metric(
"Theoretical BR",
f"{fmt_br(bb['br_nyq'])} ยท {bb['br_nyq_norm']:.0%}",
@@ -344,7 +344,7 @@ def render():
)
st.caption(f"Spectral Eff: {bb['spe_nyq']:.2f} bps/Hz ยท {bb['bits_per_symbol']:.2f} b/Symbol")
with b5:
- st.markdown("##### ๐ญ Practical")
+ st.markdown("##### Practical")
st.metric(
"Physical Layer BR",
f"{fmt_br(bb['br_rcv'])} ยท {bb['br_rcv_norm']:.0%}",
@@ -360,12 +360,12 @@ def render():
st.divider()
# โโ Graphs โโ
- st.markdown("### ๐ Interactive Graphs")
+ st.markdown("### Interactive Graphs")
tab_bw, tab_pow, tab_map = st.tabs([
- "๐ถ BW Sensitivity",
- "โก Power Sensitivity",
- "๐บ๏ธ BR Factor Map",
+ "BW Sensitivity",
+ "Power Sensitivity",
+ "BR Factor Map",
])
cnr_imp = combine_cnr(*cnr_imp_list)
diff --git a/views/satellite_types.py b/views/satellite_types.py
index 7cb3558..8806ab7 100644
--- a/views/satellite_types.py
+++ b/views/satellite_types.py
@@ -78,7 +78,7 @@ body{background:transparent;overflow:hidden;font-family:'Segoe UI',system-ui,san
-
๐ฐ๏ธ Satellite Missions
Select a mission type above
to explore its animation.
+
Satellite Missions
Select a mission type above
to explore its animation.
Mission Control โ choose a category