permalink none

statespacedev · Jun 2, 2024 · e559781 · e559781
1 parent eb27ee8
commit e559781
Show file tree

Hide file tree

Showing 19 changed files with 29 additions and 34 deletions.
diff --git a/_config.yml b/_config.yml
@@ -16,3 +16,4 @@ header_pages:
   - docs/about.md
   - docs/photos.md
 show_drafts: false
+permalink: none
diff --git a/_drafts/nineties.md b/_drafts/nineties.md
@@ -0,0 +1,12 @@
+---
+layout: post
+title: "nineties"
+categories: aerospace starid
+---
+[paper 1997b](https://statespace.dev/docs/papers/1997%20lindblad.pdf){:target="_blank" rel="noopener"}
+
+this second paper from 1997 is an interesting case, as it's the first in this collection to bring in the topic of neural networks. it also summarizes three similar papers, but they're pay-walled. a discussion of wider context seems useful at this point to set the stage for a separate detailed discussion. 
+
+in an earlier discussion of a 1977 paper, mention is made of the resonance from 57 to 77 of the [fortran era and peak cold war](https://statespace.dev/aerospace/starid/starid77.html). there's an additional periodicity here, as this 1997 paper provides a time-capsule of the cold war's end. for those involved with astronomy and aerospace engineering around rlm and wrw at utaustin in 1990, the world had changed completely. aerospace shrank dramatically, as did neural networks. after another twenty years, both revived in an equally dramatic fashion. this is an interesting part of the project starid story to gradually explore.
+
+
diff --git a/_drafts/starid89-sirtf.md b/_drafts/starid89-sirtf.md
diff --git a/_posts/2024-04-07-unix.md b/_posts/2024-04-07-unix.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: unix
-categories: computing unix
+#categories: computing unix
 ---
 [photos](https://photos.app.goo.gl/rL5NTL2iFomFjedM6){:target="_blank" rel="noopener"}
 

diff --git a/_posts/2024-04-13-pdp-10.md b/_posts/2024-04-13-pdp-10.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: pdp-10
-categories: computing pdp-10
+#categories: computing pdp-10
 ---
 [photos](https://photos.app.goo.gl/rL5NTL2iFomFjedM6){:target="_blank" rel="noopener"}
 

diff --git a/_posts/2024-04-16-aerospace-numerical-computing.md b/_posts/2024-04-16-aerospace-numerical-computing.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "aerospace numerical computing"
-categories: aerospace numerical
+#categories: aerospace numerical
 ---
 this is an initial experiment with bringing some legacy 'blog style discussion' from python sphinx forward into website jekyll.
 

diff --git a/_posts/2024-04-17-simplex-algorithm.md b/_posts/2024-04-17-simplex-algorithm.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "simplex algorithm"
-categories: aerospace simplex
+#categories: aerospace simplex
 ---
 in the early days of digital computing, what were some of the motivations for industry to invest in computers? what exactly could computers do? they could perform numerical simulations. in the manhattan project, they replaced rooms of humans operating mechanical calculators. and they could collate data. in the sage continental air defence system, they replaced humans in low level command and control roles.
 

diff --git a/_posts/2024-04-18-kalman-filter.md b/_posts/2024-04-18-kalman-filter.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "kalman filter"
-categories: aerospace kalman
+#categories: aerospace kalman
 ---
 as both intercontinental missiles and thermonuclear weapons became practical in the mid fifties, one more technology became essential - self-contained guidance systems that could reliably get near enough to a spot on the other side of the globe. what was needed was an autonomous digital system for guidance and control of long range missiles. this was an important motivation behind the appearance, at the beginning of the sixties, of the kalman filter.   
 

diff --git a/_posts/2024-04-20-modern-kalman-filter.md b/_posts/2024-04-20-modern-kalman-filter.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "modern kalman filter"
-categories: aerospace kalman
+#categories: aerospace kalman
 ---
 the modern kalman filter is an intermediate step between the classical kalman filter, where uncertainty is represented as gaussian, and the particle filter. the advantage of gaussians is that they have only two parameters, so asked the bare minimum from late fifties computing hardware. much effort went into efficiently evolving the values forward through time via the matrix riccati differential equation for the covariance.
 

diff --git a/_posts/2024-04-21-particle-filter.md b/_posts/2024-04-21-particle-filter.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "particle filter"
-categories: aerospace particle
+#categories: aerospace particle
 ---
 from the modern kalman filter, the next step forward with 'sample-and-propagate' algorithms was to use non-deterministic sampling points or particles. a descriptive name for this is sequential monte carlo sampling processor, but a common short-hand is particle filter.
 

diff --git a/_posts/2024-04-28-vax.md b/_posts/2024-04-28-vax.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "vax-11/780"
-categories: computing vax
+#categories: computing vax
 ---
 [photos](https://photos.app.goo.gl/rL5NTL2iFomFjedM6){:target="_blank" rel="noopener"}
 

diff --git a/_posts/2024-05-05-sun.md b/_posts/2024-05-05-sun.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "sun-1/150"
-categories: computing sun
+#categories: computing sun
 ---
 [photos](https://photos.app.goo.gl/rL5NTL2iFomFjedM6){:target="_blank" rel="noopener"}
 

diff --git a/_posts/2024-05-06-vms.md b/_posts/2024-05-06-vms.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "vms"
-categories: computing vms
+#categories: computing vms
 ---
 [photos](https://photos.app.goo.gl/rL5NTL2iFomFjedM6){:target="_blank" rel="noopener"}
 

diff --git a/_posts/2024-05-14-lost-in-space.md b/_posts/2024-05-14-lost-in-space.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "lost in space problem"
-categories: aerospace starid
+#categories: aerospace starid
 ---
 the core of the lost in space problem is a total lack of star tracker pointing knowledge. often there's at least some knowledge of the star tracker's attitude, but the lost in space problem is the extreme opposite case, with infinite attitude uncertainty.
 

diff --git a/_posts/2024-05-17-starid77.md b/_posts/2024-05-17-starid77.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "starid77"
-categories: aerospace starid
+#categories: aerospace starid
 ---
 [paper 1977](https://statespace.dev/docs/papers/1977%20junkins.pdf){:target="_blank" rel="noopener"}
 

diff --git a/_posts/2024-05-20-starid93-triangles.md b/_posts/2024-05-20-starid93-triangles.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "starid93 triangles"
-categories: aerospace starid
+#categories: aerospace starid
 ---
 [paper 1993](https://statespace.dev/docs/papers/1993%20liebe.pdf){:target="_blank" rel="noopener"}
 

diff --git a/_posts/2024-05-24-starid97a-grid-algorithm.md b/_posts/2024-05-24-starid97a-grid-algorithm.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "starid97a grid algorithm"
-categories: aerospace starid
+#categories: aerospace starid
 ---
 [paper 1997a](https://statespace.dev/docs/papers/1997%20padgett.pdf){:target="_blank" rel="noopener"}
 

diff --git a/_posts/2024-05-26-starid86-hubble.md b/_posts/2024-05-26-starid86-hubble.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "starid86 hubble"
-categories: aerospace starid
+#categories: aerospace starid
 ---
 [paper 1986](https://statespace.dev/docs/papers/1986%20groth.pdf){:target="_blank" rel="noopener"}
 

diff --git a/_posts/2024-05-31-starid89-sirtf.md b/_posts/2024-05-31-starid89-sirtf.md
@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "starid89 sirtf"
-categories: aerospace starid
+#categories: aerospace starid
 ---
 [paper 1989](https://statespace.dev/docs/papers/1989%20bezooijen.pdf){:target="_blank" rel="noopener"}